he is the least hardworking of all( more,less,better,least)
she isn't as fast as Sally(so,as,with,like)
it's becoming harder and harder to find a job.( harder,hard,more harder,hardest)
the older the children get, the more independent they become( much, more,least,many)
his illness is much moreserious than he thought( much,many, much more, little)