Turn the following sentences into the Passive

Scientists might discover a cure for cancer. A cure for cancer might be discovered.

Someone should help the old woman across the street.

They might have arrested the escaped prisoner

They should have provided more food at the reception

They ought to warn the public about him

They should build more bus lanes

They could have written the answers more clearly.

The old woman should be helped across the street. The escaped prisoner might have been arrested More food should have been provided at the reception The public ought to be warned about him More bus lanes should be built The answers could have been written more clearly.