30.We are sorry. All lines are currently busy. Please __________ on for the next available agent.
(A) keep
(B) hold
(C) call
(D) take

答案：登入後查看
統計： A(8), B(24), C(5), D(4), E(0) #667105

詳解 (共 1 筆)

#2661926
我們很抱歉。所有的線都在忙著。請____...
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