问题
选择题
---I am going to Nanjing and stay there for a week.
---_________you are there, would you please buy some books for me?
A．If
B．While
C．Since
D．As soon as
答案
答案：B
题目分析：句意：我将要去南京并在那里呆一周。当你在那里时，你能为我买一些书吗？A如果B当……，表示一件事情在发生的过程中另一件事情发生了。强调一段时间，C自从……，D一……就……，故选B.