He has just bought twelve pigeons.When did he——them?a.bought b.buys c.buy d.buying

分类: 作业答案 • 2021-12-19 21:58:24

问题描述：

He has just bought twelve pigeons.When did he——them?a.bought b.buys c.buy d.buying
选什么,为什么?

答

第一时间为你提供正确答案：
C
特殊疑问句,前有疑问助词did,所以动词要用原形