用所给词的适当形式填空。

1. Look! They________(study) in the classroom.

2. My brother often_________ (watch) football matches on TV.

3. Don't talk too loudly(大声地). My father_________(sleep) in the bedroom.

4. We can't go out now. It's_________(rain) so hard.

5. It's________(cloud) ,but it's very hot.