David Beckham decided to ________ playing football match forever because he is not energetic enough.

Many sportsmen are getting ready _____ the 2008 Beijing Olympic Games. [ ]

Millie and Kitty are good friends, they often _________ each other _________study.

He to Dongying many times, so he knows every corner of it.

Because of the Mid-autumn Day happening to _________, we have just enjoyed a longer National Day vacation than ever before, but it is estimated that it will be