Mary her mother with the housework, but she didn’t.
A. must have helped
B. ought to have helped
C. must help
D. should help
Mary her mother with the housework, but she didn’t.A. must have helpedB. ought to have he
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解决时间 2021-01-04 06:09
- 提问者网友:那叫心脏的地方装的都是你
- 2021-01-03 08:35
最佳答案
- 五星知识达人网友:大漠
- 2021-01-03 09:37
A. must have helped(答案→)B. ought to have helpedC. must helpD. should help解析:考查情态动词用法。根据but后面的didn’t,说明本句是对过去情况的虚拟,故使用“情态动词+have done”的形式。Must have done一定做了某事;ought to have done本应该做某事,实际上却未做;CD两项是对现在情况的推测。句意:Mary本应该帮助妈妈做家务的,但是她却没有。故B正确。
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- 1楼网友:你哪知我潦倒为你
- 2021-01-03 11:06
好好学习下
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