【題目】—I am going to the post office.

—_____ you’re there, can you get me some stamps?

As

While

Because

If

【答案】B

【解析】選項中C項引導(dǎo)原因狀語從句；D項引導(dǎo)條件狀語從句，均與題干提供的情景不符。A項強調(diào)主句謂語動詞與從句謂語動詞的同時性，而while除可表示同時性，還可以表示一個動作在另一個動作正在進行或持續(xù)過程中的某一時刻發(fā)生，這顯然是題中從句所要強調(diào)的。故選B。

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