---Do you believe there are aliens?

问题描述:

---Do you believe there are aliens?
---i'm afraid not.i don't think aliens ____in space.
A,can find B can be found C.can be founded D,can't be found
百度上的答案说选B,但我认为应该选C.外星人应该是被发现,所以要用被动语态!

答案没错啊
使用被动语态啊 find 的过去分词 就是found啊
希望能够帮到楼主