题目内容
（请给出正确答案）
Please ______ from smoking until the airplane is airborne.
A．resist
B．prevent
C．refrain
D．restrain
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更多“Please ______ from smoking unt…”相关的问题
第1题
I went to Paris in 2008, which was the only occasion when I ______ the journey in exactly three days.
A．was able to make
B．must make
C．could make
D．must have made
请帮忙给出正确答案和分析，谢谢！
第2题
Is this novel ______ Mr. Zhang referred to last week?
A．that
B．what
C．which
D．the one
请帮忙给出正确答案和分析，谢谢！
第3题
If there were no polysemy, Chinese______ much easier to learn.
A．will be
B．could have been
C．would be
D．would have been
请帮忙给出正确答案和分析，谢谢！
第4题
All you do now is ______ the housework before your mom arrives home.
A．having finished
B．finish
C．finishing
D．to have finished
请帮忙给出正确答案和分析，谢谢！
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