IV. Fill in the blank with the suitable form of verb in the bracket

1. They (watch) …………….. their favorite TV programmes at the moment.
2. Mary and John are neighbors. They (know) …………….. each other for a long time.
3. We (arrive) ……………..in New York yesterday.
4. We (begin) …………….. to study English since 1999.
5. My mother is tired enough (cook) ……………..tonight.
6. The teacher asked me (not make) …………….. noise in class.
7. The boys like (play) ……………..games but hate doing lessons.
8. His doctor advised him to give up smoking yesterday.
9. Look at those black clouds! It ( rain) ……………...
10. When I was a small boy, I used (live) ……………..on a farm.