Question

【题目】A small car is big enough for a family of three ________ you need more space for luggage.
A.once
B.because
C.in case
D.unless

Answer 1

【答案】D
【解析】once意为“一旦”；because意为“因为”；in case意为“以防，万一”；unless意为“除非”。句意：一辆小汽车对一家三口已足够了，除非你需要更多的空间放行李。故选D。