Переделайте следующие предложения в вопросительно-отрицательные и дайте краткие ответы. образец: they are at home. — aren't they at home? — yes, they are. — no, they aren't. he has finished his work. she will visit us on sunday. she has many relatives. his father works here. you know his address. we shall go home together. he can play chess. his friends were playing football. you have done the task.