Impersonal passive voice

Rewrite this sentence with the impersonal passive voice: People know that she is a good swimmer.

Rewrite this sentence with the impersonal passive voice: People They say that Francis is in hospital.

Rewrite this sentence with the impersonal passive voice: They think that the children are in bed.

Rewrite this sentence with the impersonal passive voice: People believe that the robber has worked in the bank.

Rewrite this sentence with the impersonal passive voice: People believe that nuclear power stations are dangerous.

Rewrite this sentence with the impersonal passive voice: His collegues thought that he was on holiday.

Rewrite this sentence with the impersonal passive voice:  People know that cars pollute the environment.

Rewrite this sentence with the impersonal passive voice:  They believe that she will win a gold medal.