选择所给词的正确形式填空。

1. It's time _____________ (go home / to go home).

2. She would like _____________ (to be / be) your penfriend.

3. Peter lives on _____________ (the second / the two) floor in the building.

4. Shall we _____________ (have lunch / having lunch) now?

5. Take more exercise, you'll be _____________ (strong / stronger).

6. I am going to play cards with _____________ (they / them).

7. The park is about three _____________ (kilometers / kilometre) away.

8. I like _____________ (dance / dancing).

9. Can I have _____________ (her / hers) telephone number?

10. It's often _____________ (rain / rainy) in spring in Hefei.