问题

I didn’t hear the phone. I ___ asleep.

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

正确答案是：

同类题型

Have you ever felt your cheeks get hot，your palms sweaty or been afraid to _______your teachers’ eyes when they are about to call on someone?

The reason ______ he gave for being late was ______ he overslept this morning.

d some fresh air, so I am going out for a walk—________

I go home ____5:30 Sunday afternoon.

May I go and play with Tom this afternoon, mum? —No．You can’t go out ______ your homework is being done