英语选择,求速度!带解析!
( ) 1. ______ of us live on rice. We live ______ on rice.
　　A. Mostly; most
　　B. Most; almost
　　C. Mostly, almost
　　D. Most; mostly
( ) 2. Does Dr. Ma treat patients ______ a plane or ______ a hospital?
　　A. by; in
　　B. on; on
　　C. on; in
　　D. in; on
( ) 3. These children ______ be Young Pioneers.
　　A. are proud
　　B. are proud to
　　C. are proud of
　　D. proud of
( ) 4. All my father needs is enough money ______ his work.
　　A. carrying on with
　　B. carried on with
　　C. to carry on
　　D. to carry on with