单项选择题

He won the scholarship. He ______ hard these terms.

A．should have worked
B．must have worked
C．must have been working
D．could have worked
<上一题 目录 下一题>
热门 试题

单项选择题
When they had finished playing, the children were made to ______ all the toys they had taken out.
A．put out
B．put off
C．put up
D．put away
单项选择题
The servant ______ all day and all night.
A．made to work
B．was made to work
C．was made work
D．was made working
相关试题