Simon was a football fan. （改为同义句） 
Simon __________  __________ about football. 
I received a letter from my parents yesterday.  (同上)
I __________ __________ my parents yesterday.
We can’t live if there’s no air or water. (同上)
We can’t live _________ air ______ water.   
To be careful with fire is important. （同上）
___________ important _________ be careful with fire.
It’s great fun to play chess in the park. （改为感叹句）
_____________ great fun it is ____________ play chess in the park!