12 leaves ví he là chủ ngữ số ít nên điền leaves

13 bought vì buy là đã mua rồi nên điền bought

14 writes vì she là chủ ngữ số ít nên chọn writes là thích hợp

15  have finished

Exercise 3

1 last vì có since rồi nên ko có last

2 almost vì có for rồi. chữa lại thêm ago vào sau 5 year

3 bỏ haven't đi chữa lại thành have

4 bỏ the đi

5 bỏ hasn't đi vì I là chủ ngữ số nhiều. Chữa lại thành have

6 chuyển just lên trước have

7 bỏ since thay bằng for

8 bỏ since thay bằng for vì for đứng trước khoảng thời gian

9 bỏ any 

10 bỏ hasn't thay bằng have vì I là chủ ngữ số nhiều nên dùng have

12. How many bottles does the milkman leave? He leaves six.

13. I bought a new carpet. Come and look at it.

14. She writes three books about her wildlife.

15. We finished one English course.

Bài 3:

1. I haven't cut my hair since June.

2. She has worked as a teacher for almost 5 years.

3. The lesson hasn't started yet.

4. Has the cat eaten yet?

5. I am worried that I still haven't finished my homework yet.

6. I have decided to start working next week.

7. He has been at his computer for seven hours.

8. She hasn't received any good news for a long time.

9. My father hasn't played any sport since last year.

10. I need to have a shower. I haven't had one since Thursday.

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