III/
1. watched => was watching (thì quá khứ tiếp diễn)
2. were knowing => knew (động từ know không sử dụng ở dạng tiếp diễn, hơn nữa chủ ngữ 'he" không đi với tobe là were)
3. for => since
4. hear =. hearing (look forward to V_ing: trông mong)
5. don't talk => not to talk (ask somebody not to do something: yêu cầu ai không làm gì)
6. ask => asked (câu điều kiện loại 2)
7. to play => playing
8. visited => have visited
9. told to => told
10. playing => play (let somebody do something: cho phép ai làm gì)
IV/
1. A (English là số ít => chọn A)
2. C
3. D (help somebody to do something: giúp ai làm gì)
4. C (cấu trúc bị động: tobe + PII)
5. B
6. D
7. B
8. C
V/
1. I wish we could communicate with animals
2. Men used to be the bread winner of the family
3. I wish my cousin were at my birthday party
4. Children used to spend a lot of time playing outdoors.
VI/
1. Despite feeling tired, Sue stayed up late talking to Jill
2. It was such a hot day that we had lunch outside in the garden.
3. I started working for this company ten years ago.
4. I wish I had finished my homework last night.
5. I'm interested in reading scientific books
6. Many people are fond of going to the countryside at weekends.
7. I was invited to the party on the occasion of her birthday last week.