Question

-Do you know the boy________ is sitting next to Peter?
-Yes. He is Peter's friend. They are celebrating his ________ birthday.

1. A.
   who; ninth
2. B.
   that; nineth
3. C.
   /; nineth
4. D.
   which; ninth

Answer 1

A
试题分析：考查从句，从句is sitting next to Peter缺少成份，所以在关系代词里选择，who和that都可以，第九个是ninth，句子意思“你知道那个挨着皮特坐得那个男孩是谁吗？他是皮特的朋友，他们正在庆祝他的第九个生日”，所以选A
考点：考查从句
点评：做从句题时，首先看从句是否缺少成份，如果缺少成份，引导此前就在关系代词里选择，关系代词既可以做成份又可以起连接作用；如果不缺少成份，引导词就在关系副词里选择，关系副词之起连接作用