(用所给词的正确形式填空) Jim is __________ (think) enough to play CDs for us．

(用所给词的正确形式填空) There are still 10 minutes left．We needn't worry about __________ (not have) enough time．

(用所给词的正确形式填空) A week is __________ (divide) into seven days．

(同义句转换) When the train arrived, we got on it at once.

　　We got on the train ________ ________ ________ it arrived.

(同义句转换) The girl is too young to go to school.

　　The girl is ________ young ________ she can't go to school.

(同义句转换) Our school has changed greatly in the past several years.

　　There ________ ________ great changes in the past several years.

(同义句转换) I bought the bike ten years ago.

　　I ________ ________ the bike ________ ten years ago.

(同义句转换) The football match was put off. It rained.

　　The football match was put off ________ ________ the rain.

(根据句意提示写出句中所缺单词) First, please _________(介绍) yourself to us all, OK?

(句型转换) I'll try my best to run fast in the 800-metre race.(改为同义句)

　　I'll run _________ _________ _________ I _________ in the 800-metre race.