What a pity. The car ran out of sight before I could its number.
A. set about
B. set down
C. set out
D. set up
网友回答
A. set about
(答案→)B. set down
C. set out
D. set up
解析：考查词组：A. set about开始，B. set down记下，C. set out出发，开始，D. set up建立，句意：真遗憾，我还没有记下号码，汽车就开得看不见了。选B。