Question

【题目】— How soon shall we leave the airport?—We won't leave ________ we make sure that everything is OK.

A.because

B.until

C.as soon as

D.if

Answer 1

【答案】B

【解析】

句意：——我们多久离开机场？——在确认一切正常之前我们不会离开。

考查从属连词辨析。because因为；until直到；as soon as一……就；if如果，根据前后句的句意，可知“直到一切正常，我们才会离开。”所以用not… until…“直到……才……”引导时间状语从句，故选B。