题目内容
--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：
解析：
解析：
|
while “在……时候”． |
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题目内容
--I'm going to the post office.
--________ you are there, can you get me some stamps?
[ ]
|
while “在……时候”． |