题目内容
把下面句子合并成一句。
John is a very kind-hearted man．You can turn to him for help．
The letter is from my uncle．I received it yesterday．
The teacher saw what happened．He was standing nearby．
The girl is not here now．She told me the news．
This is the tree．He was climbing it yesterday．
Do not drink water．It has not been boiled．
