Поставьте следущие словосочетания во множественное число (обратите внимание на изменения в указательных местоимениях this man, that match, this tea-cup, this egg, that wall, that picture, this foot, that mountain, this lady, that window, this knife.

these men, those matches, these tea-cups,  these eggs, those walls, those pictures, these feet, those mountains, these ladies, those  windows, these knives.