问题
选择题
As the road to the airport is under reconstruction, we'd better ________ early to avoid the traffic jam.
A．pay off
B．set off
C．put off
D．take off
答案
答案：B
B 考察动词短语辨析。句义：因为通向机场的道路正在重建中，我们最好早点出发以避免交通堵塞。Set off出发，符合题意。Pay off还清，成功；put off推迟；take off起飞，脱下。根据句义说明B正确。