Robert failed to complete his education____ he found it hard to focus on his studies.
Lin Xi, a Chinese in Berlin, went to the World Championships in Athleties, she saw China’s Bai Xue win the gold medal.
This middle school is ______ to a teachers' college.
______ good, this kind of fruit ______ very well in our city.
Mary’s being hurt ______ the uncertainty of our winning in the game.
______ to give up smoking, he threw away his ______ cigarettes.