用括号内所给动词的适当形式填空
1. I am sorry ___________ (hear) that your mother was ill yesterday.
2. After finishing ___________ (do) her homework, Lucy went out.
3. If it ___________ (rain) tomorrow, he won't go to see the doctor.
4. I think it ___________ (snow) tomorrow.
5. If I become a teacher, I ___________ (work) with children.
6. Was he able to ___________ (read) books when he was a small boy?
7. Scientists are trying ___________ (make) robots like people.
8. He needs ___________ (get) some money for this sweater.
9. I found it easy ___________ (learn) the piano.
10. Some teachers often complain about ___________ (teach) these tired kids in the classroom.
