— About of the students in our class were born under the Year Rabbit. — Oh that is to sa

问题补充：

— About of the students in our class were born under the Year Rabbit.

— Oh, that is to say they were born in .

A. four-fifths; the 1999

B. four-fifths; 1999

C. four-fifth; the 1999

D. four-fifth; 1999

答案：

A. four-fifths; the 1999

(答案→)B. four-fifths; 1999

C. four-fifth; the 1999

D. four-fifth; 1999

解析：句意：我们班的学生五分之四是兔年出生的。哦，也就是说他们出生在1999年。在英语中的数词，分子用基数词，分母用序数词，当分子大于一时，分母使用复数形式。表示年份的数词前通常不用任何冠词。所以选B。