Grammar Quiz: Object Clauses (1)

Object Clauses (1)

You should concentrate __________ the teacher says.
  on which
  on what
  at that
  on that

When Europeans arrived in __________ America, there were only Indians there.
  which now is
  what is now
  now
  now is

__________ has recently been done to improve the service, we still get a lot of complaints about it.
  Even what
  Though it
  That
  In spite of what

Sometimes parents want their children to do __________ they cannot do themselves.
  that they feel
  what they feel
  what they feel that
  they feel what

We were not aware __________ was going on.
  what
  of what
  of that
  that what

Contrary _________ we had expected, he didn't try his best.
  to that
  to what
  to
  to which

Manners are just a formal expression of __________ you treat people.
  how
  what
  why
  who

I wonder ______ soon the letter will reach him.
  what
  which
  that
  how

I remember __________ this used to be a quiet village.
  how
  what
  where
  when

Sarah hopes to become a friend of __________ shares her interests.
  anyone
  whomever
  no matter who
  whoever