麻烦回答一下1.( )pencil box is beautiful.But( )is more beautiful t

麻烦回答一下
1.( )pencil box is beautiful.But( )is more beautiful than( ).
A:Tom’s;my;he B:Tom’s;mine;his C:Toms ;mine;his
2.Help( )to some fish,please.
A:you B.your C.yourself
3.After work ( )teach( )to read and write.
A.I me B.I mine C.I myself
4.Some of( )are Young Pioneers.
A.they B.their C.them
5.She told( )a friend of ( )would go to America.
A.him her B.his hers C.him hers
本人的答案是：B.C.C.C.A.不知是否正确