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题目内容
（河南工学院大学英语）
---- I have some trouble with this problem Could you do me a favour?----- Sorry, you may turn to him He has been ______ and he may know how to solve it(本题1.0分)
A、 experience
B、 expert
C、 skill
D、 around
A、 experience
B、 expert
C、 skill
D、 around
参考答案