Countable or Uncountable? Part 3 (A quick quiz)

Do you know the plural forms of these 25 countable nouns? 

Boss, Box, Bush, Calf, Canary, Car, Child, Church, Circus, Club, Company, Computer, Fly, Foot, Glass, Goose, Grade, Heart, Hobby, Jaw, Kangaroo, Key, Knife, Tray, Rodeo