问题标题：
改错Youmustcarefulbecauseofthetrafficisverydangerous.
问题描述：
改错Youmustcarefulbecauseofthetrafficisverydangerous.
邓双成回答：
Youmust【be】carefulbecausethetrafficisverydangerous.
becareful小心,当心
because后跟从句；becauseof后跟名词或短语,所以去掉of
不明白的再问哟,请及时采纳,多谢!
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