About of the engineers in my company seem to be in their A. second-nines; fourtiesB. two-

问题补充：

About of the engineers in my company seem to be in their ．

A. second-nines; fourties

B. two-ninths; forties

C. second-ninths; fortieth

D. two-nineths; fourtieth

答案：

A. second-nines; fourties

(答案→)B. two-ninths; forties

C. second-ninths; fortieth

D. two-nineths; fourtieth

解析：句意：我公司的大约九分之二的工程师好像都在四十多岁。分数的表达法是：分子用基数词，分母用序数词，分子超过1，序数词要加s。表示在大约几十岁，要将后缀ty变成ties 。故选B