Question

【题目】You can ask the policeman for help_________you don’t know the way.

A. though B. if C. unless D. until

Answer 1

【答案】B

【解析】试题分析：句意：如果你不认识路，你可以向警察寻求帮助。A. though 尽管；B. if 如果；C. unless 除非；D. Until直到。故选B。