Question

【题目】The fireman set out immediately __________they received the phone call for help．

A.unlessB.whileC.as soon asD.until

Answer 1

【答案】C

【解析】

句意：消防队员一接到求助电话就立即出发了。

选项A：除非；选项B：当……时候；选项C：一……就；选项D：直到。结合语境：消防队员一接到求救电话就立即出发了。故选C。