1.the reasono of your errors is because you are carefuiless and impatient
2.this is why i writed to you
3.He suffers from heart diaease,which is because he smokes a lot
4.My advice is that goverment should use law to stop smoking
5.The fact that smoke is bad for health
6.It is a pity that you didnt listen to the lecture yesterday还有两句：
据报道中国30%的手机用户是青少年
要紧的是我们应呼吁公众多种植树以保护环境It is said that 30 precent of phone users are teenagers
The most important thing is that we should appeal the public to plant more trees to pretect the environment