用所给单词的适当形式填空。

1. The two boys are from              (Chinese).

2. How many              (knife) do you have?

3. Some students often              (swim) in the river.

4. Many              (child) like drinking orange.

5. We want five              (bottle) of beer, please.

6. Can you help kids with              (dance)?

7. They want              (join) the baseball club.

8. Can you              (sing)?

9. Can you play the guitar              (best)?

10. I think she is              (England).