用括號內(nèi)動詞的適當形式填空。
1. One of the boys ______ (be) born in 1990?
2. Mr Wang ______ (enter)a competition before?
3. ______ you ever ______ (write) to your friend in English?
4. My brother______ (not visit) the Great Wall last year?
5. Tom ______ (not go) to the zoo, will he?
6. I ______ just______ (finish) my homework.?
7. The boy ______ (stay) at home last night.?
8. The man ______ (be) 40 years old now.He ______ (be) in Tianjin for 20 years?
9.—Sally ______ (visit) China?
—No, hasn't?
10. Lingling wants ______ (go) to the USA.