___ some teenagers don’t realize is ___ difficult life can be after they get addicted to drugs.
Animals are obviously _____ lower form of life than ______ man.
Recycling is one way to protect the environment; reusing is _____.
I would have gone to my cousin’s birthday party last night, but I ______ available.
______ is often the case in science, there is no simple answer
The airport ______ next year will help promote tourism in this area.