I found a bird ( ) the tree.A.sing on B.sing in C.singing in D.sa_英语解答

I found a bird ( ) the tree.
A.sing on B.sing in C.singing in D.sang in

人气：285 ℃　时间：2019-12-13 14:37:30

解答

【答案】C.singing in
【解析】
find sb.doing 看到……正在做某事
in the tree 【固定介词搭配