I'm very besy. I exercise in my free time(合并为一句话)

I'm very besy,so I exercise in my free time.

I exercise in my free time , for(because) I'm very besy.

i am so busy that i exercise in my free time

i exercise in my free time do my best....
扼。。不知道besy 什么意思。

罗嗦，就后面半句就可以了。