”我很想做点生意,但是不知道该从事什么行业”.英语怎么说?

I would like to do some business, but do not know what kind of industry.

I want to do some business, but not sure of which.

I really want to do some business ,but I don 't know what kinds of work to do .

I want to do some business, but not know what kind of business I should do.

我很想做点生意,但是不知道该从事什么行业.
I really want to do some business,but I don't know which field I should start in.
这样翻译比较地道,：)

I want to do some business, but not know which business I should choose。

I want to do some business very much,but I don't know what field I ought to choose.