His mother is ill.He__ __look after her at home(has to与must

His mother is ill.He__ __look after her at home(has to与must 改错：His mother is ill,he has to look after her at home. 改同义句My mother is ill.l must look after her at home. His mother is ill.He __lookafter her at home用must行不/ because her mother is ill ,____she must stay at home . My mother is ill.You must __ her at home. 单项选择()1.His mother is ill.he is going to()her at home.A.take Mum is ill in bed and Dad has to l______ after her at home.填 Her son is ill.She has to him at home Her son is ill. She has to him at home Her mother is ill .She must take care of her at home.改为同义句 请 Her mother is____(bad)ill.She had to look after her at home.