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【单选题】

You should be careful while__ along the street.
[ ]

A.
walk
B.
walking
C.
walked
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参考答案:
参考解析:
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举一反三

【单选题】I'd like to know __________or not.

A.
whether will he come
B.
if he has come
C.
whether he will come
D.
that he will come
相关题目:
【单选题】I'd like to know __________or not.
A.
whether will he come
B.
if he has come
C.
whether he will come
D.
that he will come