问题

I didn’t hear the phone. I _____ asleep. [ ]

A: can be
B: must have been
C: must be
D: should have been

正确答案是：

同类题型

She doesn’t have brothers ________sisters.

185 Hello! I_______ you _______ in LondonHow long have you been here

.The manager demanded the meeting _________.

______you write so well? —By reading and keeping diaries every day.

Have you moved into your new house？ —- NoIt _________at present