It is not okay to eat while on a fast. (abstaining from eating)
That boy can run fast. (very quickly)
a car whiz so fast.
Rate is a word used to measure something. A good sentence would be, her rate of typing was super fast.
With a fast flowing river, hydroelectric power can be generated.
The urbanization in Mexico city has grown very fast. This is a sentence containing the word urbanization.
As another deadline loomed he worked as fast as he could.
The monk was told to fast before mattins. The cheetah ran too fast for him to catch.
I am not writing a sentence using that word.
a sentence using the word endotracheal
This is a sentence using the word aviator.
By using it in a present type sentence. Ex: I reform my broken puzzle piece by piece.
I am saying a sentence using the word collagen.
this is a sentence using the word armchair.