The room is too dark. Let's ________ it.
brighten
I want to be strong. So, I exercise to __________ my body.
strengthen
We need flat pastry. Use a rolling pin to _______ it.
flatten
The bright sky will ______ in the evening.
darken
When my pencil is not sharp enough, I _______ it.
sharpen
The bolt is too loose. Use a spanner to _______ it.
tighten
If the jeans are too short, pull the cord to ________ them.
lengthen
The story is too long. You need to _______ it.
shorten
The coffee is too strong. Add some water to ______ it.
weaken
My old blanket was not soft. So, I used fabric softener to ______ it.
soften
If you want sweet tea you can _______ it with sugar.
sweeten
The metal is not hard enough. I need to ______ it.
harden
The doorway is too narrow. We must _____ it.
widen