Where is the bird?It is on the tree.Is it singing?No,it is ____da_英语解答

Where is the bird?It is on the tree.Is it singing?No,it is ____dancing.

人气：164 ℃　时间：2020-03-01 11:38:19

解答

要什么类型的词啊···?
要不副词 happily
要不··· 时间状语 now?
呃