问题

If we __________ careful,fire can be dangerous。
A:don’t be
B:are
C:aren’t
D:won’t be
B:are
C:aren’t
D:won’t be
正确答案是:
同类题型
Our country provided the peopleplenty of things during the flood. [ ]
Are you coming to Jeff’s party? — I’m not sure. I _______ go to the concert instead
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