Поставьте следующие существительные во множественном числе: a lamp, a coach, a slice, a party, a solo, a curriculum, an ox, a sheep, a mouse, a writer, a play, a foot, a theatre, a deer, a box, a trouble, a swine, a life, a part, a handkerchief.

A lamp - lamps, a coach - coaches, a slice - slices, a party - parties, a solo - sloes, a curriculum - curriculums, an ox - oxen, a sheep - sheep, a mouse - mice, a writer - winters, a play - plays, a foot - feet, a theatre theatres, a deer - deer, a box - boxes, a trouble - troubles, a swine - swine, a life - lives, a part - parts, a handkerchief - handkerchiefs.