the teachers in the school is one hundred and of them are women teachers.A. The number

问题补充：

the teachers in the school is one hundred, and of them are women teachers.

A. The number of; four-fifths

B. A number of; four-fifth

C. A number of; four-fifths

D. The number of; four-fifth

答案：

(答案→)A. The number of; four-fifths

B. A number of; four-fifth

C. A number of; four-fifths

D. The number of; four-fifth

解析：根据语境可知此句的含义是学校里的老师的数量是一百，大约五分之四的是女老师。…的数量用the number of表示；五分之四用four-fifths来表示，由选择项的提示可知选择A。