Поставьте представленные предложения в вопросительную и отрицательный формы: • they had been in the usa till the end of the year. • they have proved that there is no life on the moon. • i will have done my home task by 7 o’clock. • i spent all holidays in the village last summer. • the train arrives at 7 sharp. • she will come to the department store at 4 o’clock. • my wife is reading the book now. • she was listening to the lecture very attentively. • he will be watching the new film this time tomorrow.