Запишите существительные во множественном числе.

A. family, woman, duck, lake, photo, quiz, tomato, play, sheep, uncle, pony, leaf, belief, face, postman, toy, tooth, kerchief, mouse, child, umbrella, curriculum, magazine, knife, life, path, class, roof, grass, cup, city, phenomenon.
B. mother-in-law, butterfly, reading room, standard lamp, inkpot, tape recorder, son-in-law, exercise book, suitcase, blackbird, passer-by, ex-president.