How many students in your classhave visited the White House—______.

Mark never considers himself as ________ failure. On the contrary, he thinks he is on the road to _______ success.

My aunt bought me ______many story books that I spent a lot of time _____ them.

Our parents are always strict____ us , especially ____our studies.

If I ____ more about diamond, I ____cheated by that man.