问题
选择题
It is reported that two schools, ________ are being built in my hometown, will open next year.
A．they both
B．which both
C．both of them
D．both of which
答案
D
题目分析：考查定语从句：句意：据报道，在我的家乡正在建的两所学校将于明年启用。both of which引导非限制性定语从句，which指代先行词schools，作of的宾语。they both和both of them都不能引导定语从句，所以是错误的。which both中的which不能修饰both，选D。.