请问“You'd better think it over carefully

请问“You'd better think it over carefully Think it over carefully before you decide This is an useful book.You'd better read it carefully.修改病句 I think you'd better .I think you'd better do it at once .(改为同义句） I think it_____ They are doing their homework carefully.you'd better not---- You should have looked it over carefully yesterday 88.______ Have you ever thought it over carefully before goi I think you'd better ( ) the raincoat with you because it'll You'd better( )it today You'd better( )it today? I don't think your answer is＿＿.You'd better do it again.