Question

【题目】It's not rare in __________ that people in __________ fifties were going to college for further education.

A. the 1990s；/

B. 1990s；/

C. 1990s ； their

D. the 1990s ； their

Answer 1

【答案】D

【解析】“在20世纪90年代”用in the 1990s或in the 1990's；表示“在某人50多岁时”用in one's fifties。