用所给词的适当形式填空。
1. Maria _____ (can) speak when she was two years old.
2. — Look! Tom is having lunch.
— Yes, he often _____ (have) lunch at half past twelve.
3. Do you enjoy _____ (play) basketball?
4. We should _____ (finish) the work on time.
5. The boy _____ (stay) up until the TV said goodbye.
6. ____ our sister _____ (have) any milk?
7. Why _____ (not tell) me about it early?
8. —_____ they _____ (go) home yesterday?
— Yes, they did.
9. They each _____ (have) a CD in their bags.
10. It is a good time _____ (sing) now.
