改错：His mother is ill,he has to look after her at home.这个句子怎么看怎么对啊,为什么要把is改成being?

改错 the reason why he didn´t come today is because his mother is ill Mike is ill.His mother feels__(worry) His mother is ill.He has to look after his mother.(改为同义句)His mother is ill.He has to( )( )( )his mother. 改错：His mother is ill,he has to look after her at home.这个句子怎么看怎么对啊,为什么要把is改成being? His mother is_____(worry),because he is ill .理由 His mother is ill heavily,please s___for a doctor qiuckly. ```````His mother is ill.He has to go to the hospital to _____ ______his mother. 改错 His mother is seeing books in the room. His mother is worrying anbout his ______(ill)适当形式填空 His mother is ill in hospital,so he has to help his mother -------the housework,填with 还是do? Mike is a____ from school today because his mother is ill. Jack is ill.His mother is ____(介词）him all night. His mother was b____ ill last night his mother was ____ (bad) ill yesterday, His mother is ill. he ___ stay at homeA.mayB.mustc.have toD.has to 补全单词 Tom h____ to babysit his little sister today.Their mother is ill. His mother is ill.He__ __look after her at home(has to与must to二选一 ) His mother is ill.He __lookafter her at home用must行不/