I’m waiting for the mail. Do you know it will arrive?A. whenB. whereC. howD. what

问题补充：

I’m waiting for the mail. Do you know it will arrive?

A. when

B. where

C. how

D. what

答案：

(答案→)A. when

B. where

C. how

D. what

解析：可联系答.案.网客服索取。

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