用所给词的适当形式填空。（共5 分）

1、Do you often memorize new words by ____(make) vocabulary lists?

2、–You speak English very well. Who taught you?    

-Nobody, I taught _______ (me).

3、I heard the brave policeman had caught two ________( thief ) in the street by himself.

4、My mother often practice _____________( dance ) at home.

5、We want to take a trip this summer somewhere in _________(east) China.

我国《生活饮用水卫生标准》规定汞浓度不得超过（）。

A.0.001mg/L

B.0.02mg/L

C.0.05mg/L

D.0.01mg/L

E.0.15mg/L