Question

---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

Answer 1

B

试题分析: 句意：我打算去南京在那儿呆一周。你在那的进候，可以给我买几本书吗？ If如果，While           当……的时候，Since自从，As soon as一……就……。since引导的从句用一般过去时，在南京呆一周，没必要一到那儿就去买书,已经计划去南京了，不必再进行假设，while引导的从句动词用进行时态或一种状态。故选B。