Question

【題目】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意為“一旦”；because意為“因?yàn)椤保籭n case意為“以防，萬一”；unless意為“除非”。句意：一輛小汽車對(duì)一家三口已足夠了，除非你需要更多的空間放行李。故選D。