I haven’t seen you for a couple of days . What have you been up ?A. in B. toC. with D. for

发布时间：2020-08-15 01:30:41

I haven’t seen you for a couple of days . What have you been up      ?
A. in
B. to
C. with
D. for

网友回答

A. in
B. to
C. with
D. for
解析：be to 在干什么。好久未见了，他在忙些什么？故选B。
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