（1）The boys like to listen to music when they do _________ (they) homework.

（2）My mother’s work is _________ (make) our city safe.

（3）One day, Mr. Green asked Mrs. Green _________ (go) shopping for him.

（4）We should brush our _________ (tooth) twice a day.

（5）This book is the lightest and _________ (thin) of all the books.

（6）She is _________ (good) than Alice at swimming.

（7）Jane _________ (get) up at 7:30 am every day. So she is always late for school.

（8）I think the _________ (four) lesson is the most difficult in this book.

（9）Look at the sign. The library is _________ (close) from 1: 00 pm to 2 s 00 pm.

（10）Jason is used to _________ (watch) TV the whole night.

【答案】（1）their （2）making （3）to go （4）teeth （5）the thinnest （6）better  （7） gets （8）fourth （9）closed （10）watching

【解析】

20.从方框中选择恰当的词，并将其字母序号填入题前的括号内。

A tired    B doing    C healthy   

D forest    E cities    F made

1.  If yowant to keep ________, yoshouldn’t eat much fast food.

2.  Shanghai is one of the biggest ________ in China.

3.  If I feel ________, I should go to bed early.

4.  Tom’s grandmother is ________ the housework now.

5.  Tigers always live in the ________.

6.  That boy ________ his mother angry yesterday.

【答案】1.  C

2.  E

3.  A

4.  B

5.  D

6.  F

【解析】略

三、阅读理解

21.阅读理解，选择正确答案

Mr Black has two cats.One is big and the other is small.He likes them very much.One day his good friend Mr Green comes to see him.He is very surprised.He finds two holes(洞）in the door, a big hole and a small one.He says, “My dear friends, why are there two holes in the door?” “To let them in and out.” Mr Black answers.“But why are there two holes?” asks his friends.“How can the big cat go through the small hole?”

（1）Mr Black has _____________.

A.two small cats  B.two big cats  C.a big cat and a small one

（2）Mr Green comes to see _____________.

A.Mr Black      B.Mrs Black       C.The cats

（3）Mr Black wants _______ to go through the two holes.

A.the big cat      B.the small cat     C.two cats

（4）Mr Black thinks the big hole is only for ________.

A.the small cat     B.the big cat      C.the two cats

（5）______ is not necessary(必要的).