A:①②③
B:②③④
C:①③④
D:①②③④
看图片,选句子
A. Easter is in April. B.When is mother's day?
C. Summer vacation is in August. D. My birthday is in December.
E. Do you like school trip?
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下列语句中下划线的成语使用有误的一项是( )
解决问题。