单项选择题

He fell asleep immediately last night. He ______ very tired.

A．must be
B．must have been
C．can be
D．could have been
<上一题 目录 下一题>
热门 试题

单项选择题
Social evils were fundamentally caused by ______ inequality.
A．economy
B．economical
C．economics
D．economic
单项选择题
______ second thoughts, I have decided to give up my visit to Shanghai.
A．In
B．By
C．On
D．With
相关试题