All of them have smoking.A. give upB. gave upC. given upD. to giving up

问题补充：

All of them have smoking.

A. give up

B. gave up

C. given up

D. to giving up

答案：

A. give up

B. gave up

(答案→)C. given up

D. to giving up

解析：have+P.P 构成现在完成时;give up间意思是:放弃.