1) (стр. 273) Назовите форму множественного числа:
House, mouse, potato, piano, dish, baby, valley, knife, thief, roof, cliff, woman, tooth, child, box, ox, sheep, brother-in-law.
2) Назовите форму единственного числа:
Heroes, kisses, flies, donkeys, loaves, feet, deer, men-of-war, sisters-in-law.

1) houses, mice, potatoes, pianos, dishes, babies, valleys, knives, thieves, roofs, cliffs, boxes, oxes, sheep, brothers-in-law.

2) hero, kiss, fly, donkey, loaf, foot, deer, man-of-war, sister-in-law.