The factory has workers due to the drop in sales, which will lead to an increase in unemployment.
A. paid off
B. laid off
C. set off
D. put off
网友回答
A. paid off
(答案→)B. laid off
C. set off
D. put off
解析：A. payoff还清，（努力）没有白费，B. lay off解雇，C. set off出发，D. put off推迟，句意：工厂已经解雇了工人因为销售量下降，这会增加失业率。根据句意选B。