用所给单词的适当形式填空。

1. What's he ___________ (do) now?

2. What ___________ (be) they going to ___________ (do) soon?

3. What ___________ (be) Tom ___________ (do)?

4. Can you sing?  Yes, I ___________ (can).

5. Where ___________ (be) she going next month?  She is ___________ (go) to Japan.