You merely have to shut your eyes and do nothing.
He had merely to wait for their arrival and the meeting could begin.
Today, he said the ship merely had to get turned around.
He merely had to keep saying no and they would be helpless.
They merely had to trust that God knew what he was doing.
She had merely to return to her apartment and stay there.
One had merely to accept the idea that the mind was all.
They merely had to be opened out into their own reality.
You have merely to tell the police who they are.
He merely had to turn on the television or listen to the radio.