单选题There  are _________of&nb

问题补充：

单选题Thereare_________ofnursesinourschoolbutonly_______ofthemareboys.A.hundreds, three hundred.B.hundred, three hundredsC.hundreds, three hundreds.D.hundred, three hundred

答案：

A解析hundreds of 为固定词组搭配，three hundred of the +n或名词复数形式选A