Hearing aids make ______ possible for people with hearing proble

Hearing aids make ______ possible for people with hearing problems to use the telephone and even to listen to music.
A、that
B、what
C、it
D、which
【正确答案】：C
【题目解析】：译文：助听器使得那些有听觉问题的人能够打电话甚至听音乐。题干中的make用作及物动词，后接复合宾语，意为“使……成为"。根据句意知此处make的宾语是to use the telephone and even to listen to music,由于宾语过长,可以使用it作形式宾语。而A、B、D无此用法。答案为C。