单项选择题

I hope the plan will work, but they themselves are very _________that it will.

A．doubtful
B．suspicious
C．suspect
D．dubious
<上一题 目录 下一题>
热门 试题

单项选择题
There are certain _________when you must interrupt people who are in the middle of doing something.
A．occasions
B．conditions
C．environments
D．situations
单项选择题
The designing of a satellite in the heavenly environment is _________an easy job.
A．by all means
B．by any means
C．by means of
D．by no means
相关试题