--I’m going to the post office.---you are there can you get me some stamps?A. AsB. WhileC

问题补充：

--I’m going to the post office.---you are there, can you get me some stamps?

A. As

B. While

C. Because

D. If

答案：

A. As

(答案→)B. While

C. Because

D. If

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