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
网友回答
A. they both
B. which both
C. both of them
(答案→)D. both of which
解析：考查定语从句。句中先行词为two schools，在句中作both of的宾语，故选D。句意：据报道，正在我家乡建的两所学校，将明年开学。