问题补充:
He used to in the sun ,but now he is used to at night.
A. read;read
B. reading;read
C. read; reading
D. reading; reading
答案:
A. read;read
B. reading;read
(答案→)C. read; reading
D. reading; reading
解析:句意:他过去常在太阳下读书,但是现在他习惯了在晚上读书。第一个空前的短语used to 的意思是过去常常做某事,后面应该跟动词的原形;第二空前的短语是be used to,在这里的意思是习惯于某事,后跟动词的ing形式。故选C。