_____ is necessary for us _____ read good books.

A. It, to           B. That, to     C. It, \

I know ________ is good for us to read English every day.

1. A.
   that
2. B.
   it
3. C.
   it's
4. D.
   this

______ is necessary for us ______ read good books.

1. A.
   It; to
2. B.
   That; to
3. C.
   That; is
4. D.
   This; is

_____ is necessary for us _____ read good books

1. A.
   It, to
2. B.
   That, to
3. C.
   It, \