4. Your dog ever (bite) anyone? - Yes, he (bite) a policeman last week.
5. There (be) many volunteers in Sea Games 22nd in Viet Nam in 2003.
6. By (work) day and night he succeeded in (finish) the job in time.
7. Mai (be) very happy when she (receive) a letter from her sister this morning.
8. Would you like (join) my class next Sunday? We (visit) the local museum.
9. My father (read) now. He always (read) a book after dinner
10. A friend of my brother’s (call) him last night, but he (not be) at home. So I (take) a message for him.
11. - Are you busy this evening? Yes, I (meet) Tuan at the library at seven. We (study) together.
13. When we (be) small, our family (live) in the countryside.
17. I (not invite) her to the party because I (forget) her phone number
19. The boys like (play) games but (hate) do lessons