Поставьте существительные во множественное число: Student, factory, volcano, sheep, bush, play, tooth, swine, water, knife, love, church, gold, fire-company, fish, woman-conductor, showgirl, fireman, child, boy, lamp, computer.

student - students;

factory - factories;

volcano - volcanoes;

sheep - sheep;

bush - bushes;

play - plays;

tooth - teeth;

swine - swine;

water - water;

knife - knives;

love - love;

church - churches;

gold - gold;

fire-company - fire-companies;

fish - fish;

woman-conductor - women-conductors (conductresses);

showgirl - showgirls;

fireman - firemen;

child - children;

boy - boys;

lamp - lamps;

computer - computers.