The alarm clock didn’t ring this morning. I ______ it last night.A、did forgotten

游客2025-03-15 51

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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