Some students are likely to give up if they don not find an activity_____they are interested in

问题描述:

Some students are likely to give up if they don not find an activity_____they are interested in
A:that B:when C:where D:what

选A.that引导的定语从句修饰前面的activity.
that在定语从句 they are interested in中做in的宾语.其他的都不能作宾语.what可以作宾语但是不能引导定语从句.