The limits of a person’s intelligence, generally speaking, are fixed at birth, but ________he reaches these limits will depend on his environment.
To write a good article, you must first____ your ideas very carefully.
We are looking for someone who is___ and hard-working.
--- Have you got any job offers? --- No, I____.
Now many people move into cities in order to have their children___.
Peter was so angry at all ____ Mary was doing ___ he walked out.