Danh từ nào sau đây được thêm -es
brother
box
bush
buzz
boss
orchid
watch
moth
dress
mouth
bus
church

Điền A or An 
eggplant
animal
usual feeling
interest
alibi
early bird
couch
airplane
grade
pair
idea
enery level

Điền A or An
bingo game
idiot
good jod
rotten plum
used fork
uncle
historian
apple 
hair
arti choke 
horrible movie
fine opera
television
earthquake
icicle 
plant
honorable discharge
intelligent man
table
up stairway
paper clip