Dinosaurs have been extinct from the earth,never__again A.seen B.being seen C.to be seen

分类: 作业答案 • 2021-12-30 12:56:23

问题描述：

Dinosaurs have been extinct from the earth,never__again A.seen B.being seen C.to be seen
D.having been seen
为什么选C

答

同样表被动,B表动作正进行,C一般表将来