问题

It’s already 11 o’clock and nobody answers the phone. George ________ asleep now.

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

正确答案是：

同类题型

Once upon a time, there was a beautiful girl _____ Snowwhite.

Does Dave go to work by __ car every day—No, he sometimes takes __bus.

Did you hear the shouts the little girl—Yes. When I arrived there, I found her looking at a snake in fear.

Peter didn’t do his homework and then he ___ a silly excuse to his teacher.

The poet compares the woman he loves __________ a rose.