Mr White _______his racing bicycle by himself yesterday, but I’m not sure  whether it is ready

A．repaired

B．had repaired

C．was repairing

D．would repair

下列不形成新月体的肾小球肾炎是

A．过敏性紫癜肾炎

B．重症毛细血管内增生性肾小球肾炎

C．狼疮肾炎

D．肺出血—肾炎综合征

E．急进性肾小球肾炎