英语,按要求改写下列各句.
1.Hergrandfatherdiedsevenmonthsago.(改为同义句)
Hergrandfather___forsevenmonths.
2.Theboyhastostayathomeandhelphisfa-therworkonthefarm.(改为反意疑问句)
Theboyhastostayathomeandhelphisfa-therworkonthefarm,_
3.Hissisterisveryyoung.Shecandonothing.(改为同义句)
Hissisteris_youngtodo
4.Ididsomereadingyesterday.(改为一般疑问句)
_you_andreadingyester-day?