About_______of the students in our class were born in the .
A. two-thirds, 1990s B. two-thirds, 1990 C. two-third, 1990s
About_______of the students in our class were born in the .
A. two-thirds, 1990s B. two-thirds, 1990 C. two-third, 1990s
A
【解析】数词的考查。分数的分子用基数词，分母为序数词。分子不是一的，分母序数词
加S。表示年代的要在后面加“s”。故选A。