you are a good pupil改为否定句和疑定句

you are a good pupil改为否定句和疑定句 You ( ) a good pupil. I think you are a good student.改为否定句,请说明原因, They are good friends.改为否定句 把 You are a good boy.变成否定句． I am a pupil.否定句 You are a pupil.Is _____ brother a pupil,too? what do you think______her a good pupil You are a good girl改为复数句 are you having a good time改为同义句 Can you ( )a good pupil?后面 填are is or be Are you a pupil of Crade Four?