Smoking is bad for your health. You should.A. give up itB. give up themC. give it upD. giv

问题补充：

Smoking is bad for your health. You should.

A. give up it

B. give up them

C. give it up

D. give them up

答案：

A. give up it

B. give up them

(答案→)C. give it up

D. give them up

解析：句意：吸烟对我们的健康有害，你应该放弃吸烟。吸烟，一件事，用it代替。动词副词构成的短语动词，代词放中间。故选C。