单项选择题

John has got a full mark in the test. He（）very hard all these days.

A．will work
B．may work
C．must have worked
D．could have worked

<上一题 目录 下一题>
热门 试题

单项选择题
—Have you been（）any of your friends from college—No, I have been out of touch with them for several years.

A．in contact with
B．satisfied with
C．touch with
D．connect with
单项选择题
Dick has never been on time,（）

A．has Dick
B．hasn't Dick
C．has he
D．hasn't he
相关试题