II. Điền từ thích hợp vào chỗ trống few, a few, little, a little There are __few___(few, a few, little) people she really trusts. It’s a bit sad. There are _a few__(few, a few, little) women politicians in the UK. Many people think there should be more. Since taking office last year, the government has made_a few_ (a few, little, a little) changes in employment policy that concerns the public. Do you need information on English grammar? I have_a few_(a few, little, a little) books on the topic if you would like to borrow them. I have __a few___(few, a few, little) good friends. I’m not lonely. He has _little_(few, a few, little) education. He can’t read or write, and he can hardly count. We’ve got _little_(few, a few, little) time at the weekend. Would you like to meet? She has _little_(few, a few, little) self-confidence. She has a lot of trouble talking to new people Julie gave us __a few___(a few, little, a little) apples from her garden. Shall we share them? There’s _little_(few, a few, little) spaghetti left in the cupboard. Shall we eat it tonight? We have only_a little_ (a few, little, a little) time to finish all of the reports by tomorrow. We have _a little_ (a few, little, a little) knowledge of market analysis. Oh no, we just have _little_ (a few, little, a little) flour left, not enough for a cake. I enjoy my life here. I have _a few_ (a few, little, a little) friends and we meet quite often. The government has done _a little_ (a few, little, a little) or nothing to help the poorest people in this country At the moment we are experiencing some cash flow problems because _little_ (few, a few, little) money is coming in. We have _a little_ (a few, little, a little) knowledge of market analysis. _few_ (few, a few, little) cities anywhere in Europe can match the cultural richness of Berlin. Unfortunately, _little_ (few, a few, little) of the companies which we sent offers to showed interest in our products. I had_a few_ (few, a few, a little) problems with the printer in the office, but it’s been fixed now. As so_few_ (few, a few, little) members had turned up at the meeting, it was decided to postpone(hoãn) it until further notice. We have to spend up – there is very_little_ (few, a few, little) time to finish the project. The deadline is next Wednesday. There is _a little_ (few, a few, a little) extra added to your salary because you will benefit from the inner city allowance. Last month was a good month for the company. We found _few_ (few, a few, little) new customers and also increased our profit. The postman doesn’t often come here. We receive _a few_ (few, a few, little) letters.  The snow was getting quite deep. I had _a little_ (few, a few, a little) hope of getting home that night. A: I’m having _a little__ (few, a few, a little) trouble fixing this shelf -> B: Oh, dear. Can I help you?  Ann is very busy these days. She has__little_(few, a few, little) free time. I strongly recommend investing in these shares because you will get a very good return after only _a few_ (few, a few, little) years. I shall be away for _a few_ (few, a few, little) days from tomorrow. Tony is a keen golfer, but unfortunately he has __little_ (few, a few, little) ability. I could speak _a few_ (few, a few, little) words of Swedish, but I wasn’t very fluent. He isn’t very popular. He has _a few__(few, a few, little) friends. I don’t think Jill would be a good teacher. She’s got_little_(few, a few, little, a little)patience. Most of the town is modern. There are__a few__(few, a few, little) old buildings. We must be quick. We have_little_(few, a few, little, a little) time. Listen carefully, I’m going to give you _a little_(few, a few, little, a little)advice. This is a very boring place to live. There’s _little__(few, a few, little, a little)to do. Do you mind if I ask you_a few_(few, a few, little, a little)questions? This town is not a very interesting place to visit, so _few_(few, a few, little, a little) tourists come here. “Would you like milk in your coffee?” – “yes, please. _a little_(few, a few, little, a little)”    Mn check dùm em với ạ! Em cảm ơn

Phương pháp làm bài:

1. Đọc và hiểu câu hỏi: Đọc và hiểu câu hỏi để xác định loại từ cần điền vào chỗ trống.

2. Xác định từ thích hợp: Xác định từ thích hợp (few, a few, little, a little) dựa trên ý nghĩa của câu hoặc ngữ cảnh chung.

3. Điền từ thích hợp vào chỗ trống: Điền từ thích hợp vào chỗ trống để hoàn thành câu.

4. Kiểm tra lại và sửa lỗi: Đọc lại toàn bộ bài làm để kiểm tra lỗi và sửa chữa nếu cần.

Câu trả lời:

1. There are _few_ people she really trusts. It's a bit sad.
2. There are _a few_ women politicians in the UK. Many people think there should be more.
3. Since taking office last year, the government has made _a few_ changes in employment policy that concerns the public.
4. Do you need information on English grammar? I have _a few_ books on the topic if you would like to borrow them.
5. I have _a few_ good friends. I'm not lonely.
6. He has _little_ education. He can't read or write, and he can hardly count.
7. We've got _little_ time at the weekend. Would you like to meet?
8. She has _little_ self-confidence. She has a lot of trouble talking to new people.
9. Julie gave us _a few_ apples from her garden. Shall we share them?
10. There's _little_ spaghetti left in the cupboard. Shall we eat it tonight?
11. We have only _a little_ time to finish all of the reports by tomorrow.
12. We have _a little_ knowledge of market analysis.
13. Oh no, we just have _little_ flour left, not enough for a cake.
14. I enjoy my life here. I have _a few_ friends and we meet quite often.
15. The government has done _a little_ or nothing to help the poorest people in this country.
16. At the moment we are experiencing some cash flow problems because _little_ money is coming in.
17. We have _a little_ knowledge of market analysis.
18. _Few_ cities anywhere in Europe can match the cultural richness of Berlin.
19. Unfortunately, _few_ of the companies which we sent offers to showed interest in our products.
20. I had _a few_ problems with the printer in the office, but it's been fixed now.
21. As so _few_ members had turned up at the meeting, it was decided to postpone it until further notice.
22. We have to spend up – there is very _little_ time to finish the project. The deadline is next Wednesday.
23. There is _a little_ extra added to your salary because you will benefit from the inner city allowance.
24. Last month was a good month for the company. We found _few_ new customers and also increased our profit.
25. The postman doesn't often come here. We receive _a few_ letters.
26. The snow was getting quite deep. I had _a little_ hope of getting home that night.
27. A: I'm having _a little_ trouble fixing this shelf -> B: Oh, dear. Can I help you?
28. Ann is very busy these days. She has _little_ free time.
29. I strongly recommend investing in these shares because you will get a very good return after only _a few_ years.
30. I shall be away for _a few_ days from tomorrow.
31. Tony is a keen golfer, but unfortunately he has _little_ ability.
32. I could speak _a few_ words of Swedish, but I wasn't very fluent.
33. He isn't very popular. He has _a few_ friends.
34. I don't think Jill would be a good teacher. She's got _little_ patience.
35. Most of the town is modern. There are _a few_ old buildings.
36. We must be quick. We have _little_ time.
37. Listen carefully, I'm going to give you _a little_ advice.
38. This is a very boring place to live. There's _little_ to do.
39. Do you mind if I ask you _a few_ questions?
40. This town is not a very interesting place to visit, so _few_ tourists come here.
41. "Would you like milk in your coffee?" - "Yes, please. _A little_."

Since taking office last year, the government has made a few changes in employment policy that concerns the public.

There are a few women politicians in the UK. Many people think there should be more.

There are few people she really trusts. It's a bit sad.

Phương pháp giải:
- Trong các chất Na2O, Na2CO3, Ba(H2PO4)2, H2S, ta cần xác định xem chúng có thuộc nhóm axit, bazơ hay muối.
- Cách xác định:
+ Nếu chất chứa ion H+ (hidro) thì là chất axit.
+ Nếu chất chứa ion OH- (hydroxyl) thì là chất bazơ.
+ Các chất còn lại không chứa cả H+ và OH- thì là chất muối.
- Kiểm tra từng chất để xác định loại chất.

Câu trả lời:
- Chất Na2O không chứa H+ và OH-, không thuộc nhóm axit, bazơ hay muối.
- Chất Na2CO3 chứa ion CO3 2- nên có ion OH-, thuộc nhóm muối.
- Chất Ba(H2PO4)2 chứa ion H+ nên có ion H+, thuộc nhóm axit.
- Chất H2S chứa ion H+ và không có ion OH-, thuộc nhóm axit.