I‘m singing.(我正在唱歌) 疑问句 否定回答 否定句 急...一定要正确

问题描述:

I‘m singing.(我正在唱歌) 疑问句 否定回答 否定句 急...一定要正确

疑问句Are you singing?
否定回答No,l'm not.
否定句l'm not singing.