根据句意，用括号内所给单词的正确形式填空。

1. —What does Ellen usually do after school?

    —She usually _____ (watch) TV.

2. —How do _____ (America) students usually go to school?

    —Well, they usually walk or take a yellow school bus.

3. Betty writes to his father _____ (two) a week.

4. It's seven thirty now. You must _____ (get) up,

    or you will be late for the meeting.

5. Yu Jing sometimes _____ (ride) a bike to school.