1 . Tim ______ (not be) short now. He is growing taller and taller.

2 . Is the dictionary on the table?（作否定回答）
__________________________________________.

3 . Is that your hat? (做否定回答)
No, ______ ______.

4 . —Do you have to clean the room every day?
—Yes. But my sister ________.

A．isn’t

B．doesn’t

C．don’t

5 . Pollution may be the most serious problem if it ________ (not control) in a correct way.

6 . Miss Li told us the earth ________ (be not) the center of the universe (宇宙).

7 . 请根据句意从方框中选择合适的动词，并用其适当形式填空，使句子通顺。

make                 not be                  dress               come            chat

1. Lee isn’t here. He with his classmates ________ happily under the tree.
2. I won’t go to the library today because it ________ open on Tuesday.
3. The little girl is only four years old, but she ________ herself every day.
4. The students ________ model planes these days for the art festival.
5. Hurry up, Sandy! Here ________ the bus.

8 . Is that your ruler? （作否定回答）
No, ________ ________.

9 . 我的弟弟年龄不够大，不能去上学。
__________________________________________

10 . —Is that his model plane? (作否定回答)
—No, ________ ________.