—When can you finish your homework?        

—It will              me about half an hour.       [ ]

A. spend    

B. take  

C. pay    

D. bring

病人口气腐臭或吐脓血是因( )

A．牙疳

B．内有脓疡

C．胃热

D．口腔不洁

E．龋齿