Exercise 3: Mỗi câu sau chứa một lỗi sai. Tìm và sửa chúng.

1. I haven’t cutted my hair since last June.
=> I haven’t cut my hair since last June.
2. She has not working as a teacher for almost 5 years.
=> She has not worked as a teacher for almost 5 years.
3. The lesson haven’t started yet.
=> The lesson hasn’t started yet.
4. Has the cat eat yet?
=> Has the cat eaten yet?
5. I am worried that I hasn’t still finished my homework yet.
=> I am worried that I haven’t still finished my homework yet.
6. I have just decidedto start working next week. 
=> KO SAI 
7. He has been at his computer since seven hours.
=> He has been at his computer for seven hours.
8. She hasn’t receivedany good news since a long time.
=> She hasn’t receivedany good news for a long time.
9.My father hasn’t playedany sport for last year.
=> My father hasn’t playedany sport since last year.
​10. I’d better have a shower. I hasn’t hadone since Thursday.
=> I’d better have a shower. I haven’t hadone since Thursday.