题目内容
I haven’t seen you for a couple of days. What have you been up ________ ?
A.in
B.to
C.with
D.for
答案:B
解析:
解析:
胜任,从事于……。
|
练习册系列答案
相关题目
题目内容
I haven’t seen you for a couple of days. What have you been up ________ ?
A.in
B.to
C.with
D.for
胜任,从事于……。
|