21.If I (be) ………………..you, I (tell) ……………………..her the truth. 22.Why didn’t you attend the meeting? Oh, I (not know) ………..indeed. If I (know) ………I (come) ……. there. 23.What ……….we (do) …..if they (not come) …………..tomorrow? 24.If you meet him, remember (not tell) ……………….him what I (just say) …………………… to you. 25.If I (have) ………….enough time now, I (write)………to my parents. 26.It’s too bad Helen isn’t here. If she (be) ……………there, she (know) ……………………what to do. 27.If I (not eat) …………………breakfast tomorrow morning, I (get) ……………..hungry during class. 28.I (change) ………….the present economic policy if I (be) ……… the President of the United States. 29.If the weather (be) ……nice today, we (go)……………to the zoo. 30.If I (be) ……..in your position, I (not do) ………………………….that. 31) If we meet at 9:30, we.........................(have) plenty of time. 32) Lisa would find the milk if she..............................(look) in the fridge. 33) The zookeeper would have punished her with a fine if Trang 28 she................................(feed) the animals. 34) If you spoke louder, your classmates....................(understand) you. 35) Dan..............................(arrive) safe if he drove slowly. 36) You.........................(have) no trouble at school if you had done your homework. 37) If you…………..........(swim) in this lake, you'll shiver from cold. 38) The door will unlock if you.........................(press) the green button. 39) If Mel...........(ask) her teacher, he'd have answered her questions. 40) I..........................(call) the office if I were you.

Cách làm:

1. Điền đúng dạng đúng của động từ trong ngoặc cho từng chỗ trống.
2. Dùng cấu trúc if...would/might/could để hoàn thành câu.

Ví dụ:
21. If I (be) were you, I (tell) would tell her the truth.

Câu trả lời:

21. If I were you, I would tell her the truth.
22. I did not know indeed. If I had known, I would have come there.
23. What would we do if they did not come tomorrow?
24. If you meet him, remember not to tell him what I just said to you.
25. If I had enough time now, I would write to my parents.
26. If she were there, she would know what to do.
27. If I do not eat breakfast tomorrow morning, I will get hungry during class.
28. I would change the present economic policy if I were the President of the United States.
29. If the weather is nice today, we will go to the zoo.
30. If I were in your position, I would not do that.
31. If we meet at 9:30, we will have plenty of time.
32. Lisa would find the milk if she looked in the fridge.
33. The zookeeper would have punished her with a fine if Trang fed the animals.
34. If you spoke louder, your classmates would understand you.
35. Dan would arrive safe if he drove slowly.
36. You would have no trouble at school if you had done your homework.
37. If you swim in this lake, you'll shiver from cold.
38. The door will unlock if you press the green button.
39. If Mel asked her teacher, he'd have answered her questions.
40. I would call the office if I were you.

If she were there, she would know what to do.

If I had enough time now, I would write to my parents.

Remember not to tell him what I just said to you.

What will we do if they do not come tomorrow?