每空填一词,使该句与所给句子的意思相同.

每空填一词,使该句与所给句子的意思相同.
1、There is no doubt that he is honest with everyone.
_____ _____ _____ that he is honest with everyone.
2、It is possible for you to develop your reading skills through practice.
Practice _____ _____ _____ for you to develop your reading skills .
3、It is too hard for me to work out this difficult problem in five minutes.
_____ _____ this difficult problem in five minutes is too hard for me.
4、It is necessary for the teachers to know what the student are thinking of.
_____ what the student are thinking of _____ _____ _____ the teachers.