Mrs. Brown ______ her husband to give up smoking and from then on he became stronger and stronger.
Our kind teacher wanted to teach us _______ he knew about this lesson.
We decided, in view of his special circumstances, _______ we would admit him for a short period.
_______ we are doing now has never been done before.
I will explain to them _______ we are planning to do on Sunday.
My pen-friend,Peter,wrote to me,expressing the hope _______ he would come to Beijing to see the 2008 Olympic Games.