About ____of the teachers in our school were born in the ___according to a survey.

问题描述:

About ____of the teachers in our school were born in the ___according to a survey.
A: two-thirds;1970 B:two-thirds;1970s C:two-third;1970 D: two-third;1970s
请问各位高手我应该选什么呢?拜托大家给解释一下谢谢了.

b 首先第一空是分数的表达方式,表示几分之几时,分子用基数词,即one,two,three之类,分母用序数词,如first,second之类,当分子大于1时,分母的序数词应加s,即用复数 第二空,因前面有定冠词the,所以应为1970s,表示年代,20...