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外语
The alarm clock didn’t ring this morning. I ______ it last night.
The alarm clock didn’t ring this morning. I ______ it last night.
admin
2011-01-14
64
问题
The alarm clock didn’t ring this morning. I ______ it last night.
选项
A、did forgotten to wind
B、may have forgotten winding
C、ought to have forgotten to wind
D、must have forgotten to wind
答案
D
解析
must have forgotten to wind the alarm clock肯定忘记上闹钟了,must have done sth.对过去发生事情的推测,肯定已经做了某事,forget to do sth.忘记去做某事。
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成人本科学位英语
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