Question

Come on,children! Help _____to some_____

1. A.
   yourself;meat
2. B.
   yourselves;chicken
3. C.
   yourselves;beefs

Answer 1

B
help oneself to sth表示随便吃某东西，本题的人称是复数，故反身代词也要用复数，应该用yourselves，beef是不可数名词，没有复数形式，本题的孩子们，请随便吃一些鸡肉吧，故选B。