单选题 After the guests left, she spent as much time as she could ______ the room.
A. tidy up B. to clear away C. clear away D. tidying up

【正确答案】 D

【答案解析】本题测试spend的用法，spend (in) doing sth.。但是由于as she could这个从句正好在所填空的前面，很容易误导考生使他们看到could后面就加动词原形。tidy up意为“整理，收拾”。
译文：客人走后，她花了很多时间收拾房间。