Question

【题目】My parents live in a small village. They always keep some candles in the house __________ there is a power off.

A. if B. unless

C. in case D. so that

Answer 1

【答案】C

【解析】句意：我父母生活在一个小村里。他们总在家中备好蜡烛，以防停电。if如果；unless除非，如果不case以防，以防万一；so that以便，以至于。结合句意选C。