单项选择题

Mary has got a full mark in the test. She ______ 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

填空题
What will the attendant ask you to show her when you check inYour ______ ticket and airport-tax receipt.
单项选择题
A．In a passport office.B．At an airport.C．In a police station.D．Outside a ticket office.
A．In a passport office.
B．At an airport.
C．In a police station.
D．Outside a ticket office.
相关试题