Please call me if you have any problems ------ (work) out.

问题描述:

Please call me if you have any problems ______ (work) out.
答案是working
但to work
两者有何区别?
1个回答 分类:英语 2014-12-14

问题解答:

我来补答
不知道,只知道有个短语
have trouble/difficuit/a problem/problems doing
 
 
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