英语,按要求改写下列各句.

英语,按要求改写下列各句.1.Her grandfather died seven months ago.(改为同义句)Her grandfather _ _ _ for seven months.2.The boy has to stay at home and help his fa-ther work on the farm.(改为反意疑问句) The boy has to stay at home and help his fa-ther work on the farm,_ 3.His sister is very young.Shecan do nothing.(改为同义句)His sister is _ young to do 4.I did some reading yesterday.(改为一般疑问句)_ you _ and reading yester-day?