Сделай эти предложения вопросительными:

He can open the door.

They can jump.

I can help my mother.

His brother can read.

Can he open the door? Can they jump? Can I help my mother? Can his brother read?

Can he open the door? Can they jump? Can I help my mother? Can his brother read? Правило. При составлении вопроса с can, can ставится на первое место. Например: Can she sing?