单项选择题

The students are busy ______ the examination.

A．preparing for
B．preparing
C．to prepare
D．to prepare for
<上一题 目录 下一题>
热门 试题

单项选择题
The machine can't be perfected overnight; in fact, it should be improved ______ .
A．one after another
B．by turn
C．fight away
D．step by step
单项选择题
It ______ me of the village where we spent our holidays last summer.
A．remembers
B．reminds
C．recalls
D．reviews
相关试题