单项选择题

Professor John McMorran's retirement ______ from next semester.

A．takes effect
B．brings effect
C．puts into effect
D．carries into effect
<上一题 目录 下一题>
热门 试题

单项选择题
Another natural ______ that contributes to the welfare of the country is water.
A．source
B．mineral
C．power
D．resource
单项选择题
But for the accident, we ______ the task much earlier.
A．should finish
B．should have finished
C．would finish
D．shall have finished
相关试题