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
答案：D
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，所以也是错误的。