用所给动词的适当形式填空。

1  He _____ (wash) the dishes in the kitchen when I saw him yesterday evening.

2. Some old people are happy _____ (be) with the young ones.

3. Tom says he _____ (not watch) the video film tonight.

4. How _____ Bob _____  (go) to school every day except weekends?

5. "Mun, I saw a new kind of bike. It _____ (cost) only two hundred and fifty yuan,"  "Oh, really?"

6. Can she _____ (run) as fast as Helen ?

7. We_____ (visit) the Great Wall next week.

8. Don't _____ (talk) now.

9. Let's_____ (try) our best _____ (finish) the work in an hour.