Question

【题目】It was playing computer games that cost the boy plenty of time that he ______doing his lessons.

A. might have spent B. must have spent

C. ought to have spent D. must gain

Answer 1

【答案】C

【解析】

试题分析：考查情态动词。句意：玩电脑游戏花费了这个男孩大量的时间，他本应该把时间用在功课上。根据句子，指的是过去的情况，所以要用情态动词加完成时态表过去本应该做而实际没做的事。might have done,本可能做某事；ought to have done本应该做而实际没做，故选C项。