To finish the homework, he spent four hours in the study.A. lockingB. lockedC. locked him

发布时间：2020-08-30 00:14:48


To finish the homework, he spent four hours      in the study.
A. locking
B. locked
C. locked himself
D. to lock

网友回答

A. locking
(答案→)B. locked
C. locked himself
D. to lock
解析：考查非谓语动词。句中逻辑主语为he，与lock之间的关系为被动，故用过去分词。句意：为了完成家庭作业，他花了四个小时把自己关在书房里。
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