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
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
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。