Образуйте единственное число следующих существительных:
Stars, trees, wolves, plates, sentences, rets, chairs, mice, geese, babies, glasses, cities, oxen, villages, books, pencils, watches

star, tree, wolf, plate, sentence, ret, chair, goose, mouse, baby, glass, city, ox, village, book, pencil, watch

A star

A tree

A wolf

A plate

A sentence

A rat

A chair

A mouse

A goose

A baby

A glass

A city

An ox

A village

A book

A pencil

A watch