They are swimming in the tiver 变成否定句,一般疑问句,对swimming提问_英语解答

They are swimming in the tiver 变成否定句,一般疑问句,对swimming提问

人气：238 ℃　时间：2019-11-04 03:23:10

解答

否定 They aren't swimming in the river.
一般 Are they swimming in the river?
提问 What are they doin in the river?