英语改成过去时的肯定/否定/一般疑问/特殊疑问

问题描述:

英语改成过去时的肯定/否定/一般疑问/特殊疑问
l am a
he is
They play the piano
he watches tv
括号提问

I was a doctor.I wasn't a doctor.Were you a doctor?What were you?He was happy.He wasn't happy.Was he happy?How was he?They played the piano at home.They didn't play the piano at home.Did they play the...