Question

This________is tall for his age，so it is easy to recognize him when he is among the ________of his age．

1. A.
   child，child
2. B.
   child，childrens
3. C.
   children，children
4. D.
   child，children

Answer 1

D
解析：

分析：child的復數形式是children．第一個空格前的this說明要用單數child；
among the children of his age“在他同年齡的孩子中間”說明要用復數。