His mother has told him many times,but it did not help这里不用IT,而用THAT指代前面整句话可以吗

翻译 tom told his mother and she said he have to do (that/what)his mother told him he told me () worrid him was his mother’s stomachache that和it代替前面的事时,有什么区别?在“His mother has told him many times,but( )did not help括号中填哪个? His mother has told him many times,but it did not help这里不用IT,而用THAT指代前面整句话可以吗 Mother has [told] me about it.括号中为什么用told.请解析. 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. he has to look after his mother at home,because his mother is {i } in bed he has to help his mother at home 对help his mother at home 提问 Who told you to buy it?Mother ( ).She said she needed it.A.told B.has told C.did D.had told His mother knew something about it only after you told herthe truth.His mother knew （）about it （） you told herthe truth. his mother died .she has been_____for three years His mother has many friends because she is o____填词 He has to help his mother at home his mother has lunch at home改为一般疑问句 My little cousin has (),and he always saks his mother. His family has father mother brother 这样写对么? He has to t___ care of his sick mother