are these sentences correct

[praveen241]

sir,
please tell me wether these sentences correct or not.

(1)- That he is rich is known to all.

(2)- It is known to all that he is rich.

(3)- He is rich and it is known to all.

(4)- If I were a minister I would do this job.

(5)- If I were a minister I would have done this job.

(6)- If I had been a minister I would do this job.

(7)- If I had been a minister I would have done job

thanks.

[Carolys]

I can say that 4 and 7 are correct. The conditionals are well used.Perhaps I'm wrong but I think they are ok
About 1,2 and 3 I can not say much.

kisses

[Tdol]

I'd change 3:

(3)- He is rich and this is known to all.

6) doesn't really work- you cxan mix conditionals in this way, but the logic of this one doesn't really work, unless having been a minister in the past qualifies for a position now you are no longer one.