用所给词的适当形式填空。

1. The house with an _______ (interest) garden is my aunt's.

2. He _______ (not know) where the post office is.

3. Do you enjoy _______ (talk) with your classmates in English?

4. The boy wants ________ (play) the guitar after class.

5. Koalas like to eat _______ (leaf).