1. the last time we saw her was on Christmas day. - we haven't ................................ 2. i haven't caten this kind of food before. - this is ................................................. 3. it stared raining can hour ago. - it has ............................................... 4. we haven't visited my grandfather for two months. - the last time ..................................... 5. i have studied english for three years. - i began ..................................................... 6. my brother has seen his best friend for nearly five years. - it's ...........................................................

Cách làm:

1. Điền dạng đúng của động từ "see" vào chỗ trống để hoàn thành câu đóng:
we haven't (seen) her since Christmas day.

2. Viết lại câu sau vào dạng phủ định:
I haven't eaten this kind of food before.
This is the first time I have eaten this kind of food.

3. Viết lại câu sau vào dạng phủ định:
It started raining an hour ago.
It has been raining for an hour.

4. Điền từ vào chỗ trống để hoàn thành câu đóng:
The last time we visited my grandfather was two months ago.

5. Viết lại câu sau vào dạng phủ định:
I began studying English three years ago.
I haven't studied English for three years.

6. Viết lại câu sau vào dạng phủ định:
It's five years since my brother has seen his best friend.
My brother hasn't seen his best friend for nearly five years.

- it's been nearly five years since my brother has seen his best friend.

- i began studying English three years ago.

- the last time we visited my grandfather was two months ago.

- it has been raining for an hour.