用所给单词的适当形式填空。

 1.  Eric often _____ (go) swimming with his friends.

2.  His mother usually _____  (take) a bus to the supermarket.

3.  My mother _____ (watch) TV every day.

4. I like comedies but my brother _____ (not like) them.

5.  What _____  your uncle usually_____ (do) on Sundays?

6. I have two basketballs and my sister_____ (have)  two basketballs, too.

7. Thanks for _____ (join) our P. E.  club.

8.  What cloes Ben's father want _____  (do)?

9.  My mother usually _____ (go) to work at seven-thirty.

10.  Let Mr Green _____ (tell) you an interesting story (故事).

铸铁管在变换管径处采用（）连接。

A、十字管

B、丁字管

C、承插渐缩管

D、短管