题干


AIDS is said____the number one killer of both men and women over the past few years in that poor area, where no medical services are available.

A:to be

B:to have bee

C:being

D:having bee

上一题 下一题 0.0难度 选择题 更新时间:2019-05-30 05:04:01

答案(点此获取答案解析)

B