This pair of trousers is very beautiful . May I ?A. try on itB. try it onC. turn it onD.

问题补充：

This pair of trousers is very beautiful . May I ?

A. try on it

B. try it on

C. turn it on

D. turn on it

答案：

A. try on it

(答案→)B. try it on

C. turn it on

D. turn on it

解析：句意：这条裤子非常漂亮。我可以试穿一下吗？try on试穿；turn on打开；结合句意，裤子漂亮，要试穿一下。故排除CD两项。当人称代词作为动词+副词的宾语时，要位于动词和副词之间。故选B。