Catherine, the alarm clock for 6 o’clock, or you would oversleep and be late for the train.
A. setting
B. sets
C. set
D. to set
网友回答
A. setting
B. sets
(答案→)C. set
D. to set
解析：
这题考查句型：祈使句+and或or+简单句，Catherine是称呼，不是主语，句意是：Catherine，把闹钟设置在６点，否则你会睡过头，火车就赶不上了。选Ｃ。