单选题The alarm clock didn't ring this morning.I______it last night.Adid forgotten to windBmay have forgotten windingCought to have forgotten to windDmust have forgotten to wind
单选题
The alarm clock didn't ring this morning.I______it last night.
A
did forgotten to wind
B
may have forgotten winding
C
ought to have forgotten to wind
D
must have forgotten to wind
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