— My computer has gone wrong. It needs soon. — Why not have David it? Nobody can if he

问题补充：

— My computer has gone wrong. It needs soon.

— Why not have David it? Nobody can if he can’t.

A. to fix; fix

B. to fixed; fixing

C. fixing; fix

D. fixing; fixed

答案：

A. to fix; fix

B. to fixed; fixing

(答案→)C. fixing; fix

D. fixing; fixed

解析：句意：我的电脑坏了，需要马上修理。为啥不让大卫修呢？如果他不能就没有人可以啦。Need to do 需要做，主语一般是人，表主动；need doing需要做，主语一般是物，表被动。Have sb do sth让某人做某事。所以选C。