题目内容：

40. The boy has spent a whole day _____ in his room. No one knows what he is doing. A. locked B. t
40. The boy has spent a whole day _____ in his room. No one knows what he is doing.
A. locked B. to loc k C. locking D. been locked

优质解答

答案：A翻译：这个男孩自己把自己锁在房间里度过了一整天.没有人知道他在干什么.1.此题非常容易误选C,即理解成：speng some time (in) doing sth但是lock做为“锁”解释时,它是及物动词,句中缺失宾语,另外它还是一个...