用所给词的适当形式填空：
1. What does he ____________ (usual) do on Sundays?
2. Please speak ____________ (loud).
3. She and her classmates dance ____________ (beautiful).
4. Nancy is walking ____________ (careful).
5. Helen is sitting ____________ (quiet) on the grass.
6. Mike can’t jump ____________ (high), but he can run ____________ (fast).