Please call me if you have any problems ( 填入work的适当形式 ) out.

问题描述:

Please call me if you have any problems ( 填入work的适当形式 ) out.
Please call me if you have any problems ( 填入work的适当形式 ) out.
括号处为什么填working?

这里 work 是非谓语,work out 和problem 的关系是 主动,所以用ing