No one can imagine the difficulty he had playing computer games.A. to give inB. to give u

问题补充：

No one can imagine the difficulty he had playing computer games.

A. to give in

B. to give up

C. giving up

D. giving in

答案：

A. to give in

B. to give up

(答案→)C. giving up

D. giving in

解析：考查固定结构。Give in屈服；give up放弃；固定句型have some difficulty in doing sth做某事有困难。本题把difficulty提前做先行词，形成短语从句。句意：没有人能想象他放弃打游戏的困难。故C正确。