The story took place during ______.
A.First World War
B.World War the One
C.the First World War
D.the World War One
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I resent ______ to wash face when visitors are present.
A.to tell
B.telling
C.being told
D.having been told
She is going to call you, _____?
A. won't she
B. isn't she
C. hasn't she
D. doesn't she
一氧化碳是一种易燃易爆气体。与空气混合能形成爆炸性混合物,遇明火、高热能引起燃烧爆炸;与空气混物爆炸限为____。
A. 12%~75%
B. 8%~10%
C. 76%~85%
D. 85%~99%
Let's ______ the votes.
A. count
B. estimate
C. number
D. calculate