Those who ____ in ____compositions, please hand them in this afternoon.[ ]

A. hasn’t handed;  his    

B. haven’t handed;  their

C. has handed;  their      

D. have handed;  his

预防脓疱疮，可对托儿所、幼儿园工作人员鼻咽部喷用（）药物。

A.0.1％磺胺

B.1％苏打水

C.0.1％呋喃西林

D.1％呋喃妥因

E.1％盐水