用所给单同的适当形式填空.Look!They are_______(sing and dance用所给单同的适当形式填空.Look!They are_______(sing and dance).

问题描述:

用所给单同的适当形式填空.Look!They are_______(sing and dance
用所给单同的适当形式填空.
Look!They are_______(sing and dance).