One reason Crystal has become so famous is that he is very quick thinking, and is often able to _____ new jokes about the people and things around him

The policeman warned the young man____after drinking.

Expect everything to go wrong in advance, ________ you may feel at a loss when it does

Long,long time ago,there was a mountain.At the top of the mountain _______,in which an old monk used to tell stories.

We must work hard and make _______continuous progress so that we can make _______great contribution to ourcountry in the future