I did not hear the phone,I___asleep.A.must be B.must have been C.should be D.should have been

I did not hear the phone,I___asleep.A.must be B.must have been C.should be D.should have been
I did not hear the phone,I___asleep.A.must be B.must have been C.should be D.should have been

I did not hear the phone,I___asleep.A.must be B.must have been C.should be D.should have been
选B
must have been 是对过去的猜测,我没听见电话响,我一定是睡着了.

我刚才没有听到电话，i___asleep。a.must会更好。已经c.should是d.should已, 只有一部分能解!!

B