1. Listen! Someone _______ (sing) in the next room.
2. There _______ (be) an exhibition of art in the museum tomorrow.
3. Everyone in our class _______ (enjoy) music very much.
4. It's so cloudy. I think it _______ (rain).
5. We are looking forward to _______ (go) sightseeing.
6. When is the best time _______ (visit) your hometown?
7. The thief tried _______ (run) away but the policemen _______ (catch) them in the end.
8. Is it difficult _______ (finish) _______ (write) the article in one day?

1. Can he _____ (sing) Beijing Opera? Yes, he can.
2. Look! The cats _____ (climb) the tree.
3. Uncle Jim is busy today. He _____ (not come) to our party.
4. Peter _____ (live) two floors below Mary.
5. The thief tried _____ (run) away but the policemen _____ (catch) them in the end.
6. Go to the bookshop in the shopping mall, and you _____ (find) a lot of postcards there.
7. Is it difficult _____ (finish) _____ (work) out the problem in five minutes?
8. One frog like this has enough poison _____ (kill) about 2,200 people.