Question

【题目】It was some time __________ I realized the fact that I had been cheated.

A. until B. before

C. unless D. since

Answer 1

【答案】B

【解析】句意：过了一段时间以后我才意识到我受骗了。until意为“直到”，before意为“在……之前”， unless意为“除非”，since意为“自从……以来”，根据句意答案选B。