b1:   

1. I don't  belong  (not/belong) to this particular government committee.
2. Hurry! The bus is coming (come). I do not want (not/want) to miss it.
3. Gregory is a vegetarian. He does not eat (not/eat) meat.
4. I am looking (look) for the manager. I can't find him anywhere.
5. We are successful because we take (take) the time to talk to our customers.
6. John deals (deal) with all the enquiries about sales.
7. At the moment we are making (make) a training video for Siemens.
8. Do you know (you/know) what Mr Briceson is doing (do)? He is not in his office.
9. I applied (apply) for a job in the sales department, but I don't know if I will be successful. It depends (depend) on whether or not they have any vacancies.
10. Unemployment is falling (fall) and is now down to 5.6%.
11. Jane is doing some research in the library. She needs it for a book she is writting (write).

mấy từ đã chia m vt ở đằng trước ĐT trong ngoặc nhé, chúc bn hc tốt

b2:

1. have you known

2. have you done

3. does Chales vistied

4. has learnt

5. have watched

6. Has he studied

7. have you waited

8. haven't seen

9. has written

10. has he waited