根据句意，用括号内所给单词的适当形式填空。有的需要加助动词或动词不定式符号。

1．There are a lot if new__________(factory)in our city．

2．Look at the sun． It always shines ________(bright)at this time of year．

3．Look! The people in the river _______(swim)

4．Miss Smith put the new dress on, and looked at _________(she )in the mirror．

5．Liu Zhong is in his _______(three)year at No．1 Middle school．

6．The teacher asked her students________(not forget) to sweep the floor．

7．I think the dictionary is __________(help)to your study．

8．Don’t open your books． Please keep them_________(close)

9．There _______(be) great changes in our country since 1979．

10．If anyone is ill here , the doctor must_______(send)for．