问题
选择题
------You are leaving for Beijing Please send me a postcard _________ you are there.
------No problem.
A.if
B.while
C.although
D.because
答案
答案:B
题目分析:句意:你将要去北京,你在北京期间请邮寄给我一张明信片。分析是你在北京的时候,也就是指在北京期间,故选B