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题目内容
（国家开放大学-管理英语4）
Regular and concrete feedback is important ______ who is not performing up to her potential.
选择一项：
A.
when to deal with a worker
B.
when dealing with a worker
C.
when dealt with a worker
选择一项：
A.
when to deal with a worker
B.
when dealing with a worker
C.
when dealt with a worker
参考答案