英语语法必刷第三部分：数词

15. (单选)

15. [单选]

About （　　） of the workers in the factory were born in the （　　）.

（A）two thirds; 1970

（B）two thirds; 1970s

（C）two third; 1970

（D）two third; 1970s

答案:

解析: