“Did he repair his bike all by himself that day?”  “No, he ___.”

A．hadn't

B．had had it repairing

C．had it being repairing

D．had Jimmy do it

慢性肾小球肾炎的主要病变部位是（）

A.双侧肾脏的肾小球

B.双侧肾脏的肾小管

C.双侧肾脏的间质

D.双侧肾脏的肾小管及肾小球同时受损

E.以上都不是