Once it is formed，a bad habit is not easy to           .

It ____ to me that we can telephone our teacher and see whether he knows what to do with the situation.

How I____Lily the pleasure that she had when she traveled alone nearly all over the Australia.

In all kinds of competitions, Jackie ______ a most excellent athlete. He has won so many golden medals.

Teachers often use simple examples to _______ language points that are _______ the students.