题目内容：

So many of them work in ( ) time during their last year of high school to buy a car.
So many of them work in ( ) time during their last year of high school to buy a car.A .free B.busy C.study D.good

优质解答

虽然语义有点奇怪,但是只能选A.这里需要一个形容词作后面time的定语,B、C都使句意不通.