I walked slowly through the market, where people（）all kinds of fruits and vegetables. I studied the prices carefully and bought what I needed.

A. sell

B. were selling

C. had sold

D. have sold

（）年，埃德蒙.哈雷编制了世界上第一张生命表，是人寿保险发展史上的一个里程碑。

A.1693

B.1906

C.1696

D.1638