List 4.1
zero
zeros
trio
trios
hero
heroes
echo
echoes
potato
potatoes
halo
halos
radios
buffalo
buffaloes
colonies
taxes
themselves
clothes
speeches

List 4.2
boys’
boss’s
babies’
parents’
ladies’
girls’
pilot’s
waiter’s
director’s
waitress’s
officer’s
owner’s
teacher’s
customer’s
actor’s
maker’s
company’s
ships’
king’s
friend’s

List 4.3
staircase
landmark
barefoot
campground
snowflake
earthquake
bookkeeper
typewriter
springtime
motorcycle
newspaper
granddaughter
sweatshirt
background
thunderstorm
meanwhile
moonlight
churchyard
landscape
overhead

List 4.4
heavy
heavier
worry
worried
envy
envious
butterfly
butterflies
daisy
daisies
bury
buried
supply
supplies
pastries
relied
earlier
copies
happiness
centuries

List 4.5
knotted
thinning
blurred
dropped
stirring
begged
starring
sobbed
fitting
dragged
fanned
petting
snapped
hopping
robbed
admitted
digging
trapping
hotter
winning

List 4.6
caring
writing
liking
smiling
staring
icing
owed
grading
chimed
shaky
behaved
escaping
polluted
puzzling
twinkling
united
described
revising
arrived
draped

List 4.7
permitted
nighttime
striking
cousins
blamed
inches
scoring
nineties
clipping
flurries
padded
trophies
scarecrow
indexes
skyscraper
presiding
derived
urging
astonishes
securing