请问怎么把这些可数名词改成复数形式?(都超简单的)

请问怎么把这些可数名词改成复数形式?(都超简单的)
afternoon
arm
autumn
basketball
bed
bike
bird
bus
cake
China
Chinese
class
classroom
coat
computer
dad
daughter
father
food
football
friend
game
head
hobby
home
homework
meat
miss
moon
morning
mother
Mr
Ms
music
name
winter
yellow
weather
thanks
ten
teacher
sun
summer
spring
sports
song
son
school
piano
答完后,