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You must be very （）when you cross the busy street.A)care .B)careful .B) carefully随便说明为什么.
题目详情
You must be very （）when you cross the busy street.A)care .B)careful .B) carefully
随便说明为什么.
随便说明为什么.
▼优质解答
答案和解析
B)careful --------小心的,仔细的,谨慎的
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