Измените следующие предложения в единственном числе 1)paws are to cats as feet are to humans- 2)keys are to doors as passwords are to computers- 3)girls are to boys as women are to men- 4)geese are to flocks as dogs are to pacts-

1) A paw is to a cat as a foot is to a human.
2) A key is to a door as a password  is to a computer.
3) A girl is to a boy is as a woman is to a man.
4) A goose is to a flock as a dog is to a pack.