he is more valuable is hard,very hard to do anything in this

he is more valuable is hard,very hard to do anything in this It is hard to do anything but listen in this family这句话啥意思? this job is hard to do 还是this job is hard to be done ? This question is hard to ( ) Andy is very hard working.he works from( )to( ) He is ___ weak to do such a hard job. He is ( )very hard ( )the office. Is very hard to be a person. chinese history is very hard to understand A tunnel is very hard to build. he is hard to___ why it is so hard to do