What can we do to cheer up sick kids in the hospital, Jason—We could __________ some books and toys to them.

下列各句中，没有语病的一句是

The fact that fun is not equal to happinessmay be the opposite of ______ many people actually understand.

Passengers are permittedonly one piece of hand luggage onto the plane.

____ method you choose, so long as you finish the job on time.