动词填空。
1. If it rains tomorrow, we _______ (stay) at home.
2. Their parents _______ (buy) a new flat when he was born.
3. How long _______ you _______ (be) like this ?
4. Did you see the man _______ (lie) on the playground?
5. _______ you _______ (mop) the floor yet?
6. How lucky we are _______ (live) in this modern city!
7. Her mother _______ (teach) in the school over the ten years.
8. The Greens _______ (have) supper right now. But we _______ (just eat) it.
9. What _______ you _______ (do) while the others were cleaning the classroom?
