单项选择题

Your experiment reports must be checked with care before ______.

A．handed them in
B．them handing in
C．being handed in
D．handing them in
<上一题 目录 下一题>
热门 试题

单项选择题
Leave me alone; mind your own ______.
A．events
B．affairs
C．things
D．matters
单项选择题
The director recommended she ______ English before going abroad.
A．have to study
B．study
C．studies
D．will study
相关试题