Question

【题目】If you miss this chance, it might be years____you get another one.

A. as B. before

C. since D. after

Answer 1

【答案】B

【解析】如果你错失了这次机会，你在获得下一次机会之前，还有几年时间。as 因为， before

在……之前， since 自从，after在……之后，选B。