sister is twelve and is a student.A. His sheB. Her myC. They sheD. My these

问题补充：

sister is twelve,and is a student.

A. His ,she

B. Her,my

C. They ,she

D. My ,these

答案：

(答案→)A. His ,she

B. Her,my

C. They ,she

D. My ,these

解析：名词前通常用物主代词，所以C中they是人称代词，故不选，动词前作主语要用

人称代词主格，而且第二个空后is，要用表示单数的单词，故B和D 不对，只能

选A。