he is a teacher (否定句)下面都是
问题描述：
he is a teacher (否定句)下面都是
I am a worker (否) I ___ ___ a worker2.they are singing and dancing they () singing and dancing
答
He isn't a teacher
I _am__ _not__ a worker
They aren't singing or dancing那 she can speak English ? 疑问 I can swimthey can sing songs 疑问Can she speak English ? Can I swim? Cantheysing songs ?请采纳，谢谢。