用所给词的适当形式填空。 1. Before ________ (enter),

问题：

用所给词的适当形式填空。

1. Before ________ (enter), he nodded to us.

2. She is a ________ (sense) girl, let's help her.

3. He is too short ________ (reach) the window.

4. The baby ________ (wet) its bed already.

5. He was so tired after running that he ________ (lie) on the ground.

6. I feel even ________ (bad) today.

7. Can you ask her ________ us a talk? (give)

8. The river has ________ very dirty. (become)

9. I ________ (phone) you as soon as I ________. (arrive)

10. ________ (cut) down the Christmas tree on the farm is very interesting .