句型转换。（每小题2分，共10分）
Are you having lunch at home ?  Yes,                               . (肯定回答)
Jack is flying the kite now. (对画线部分提问)
                                Jack                  now ?
He goes to work at 7:00. (改为一般疑问句)
                  he                to work at 7:00 ?
I have lunch at 12:00 noon. (对画线部分提问)
                                     you                    lunch ?
Do you like winter?                                     . (肯定回答)