Some buildings built in the past _______ down and new ones are being built there.
Teachers are not happy when they find in class their students sending __________ to their friends by mobile phone.
We held a football match __________ Class 1 and Class 5 last semester.
She is always ready to help people in trouble because she thinks it a _________.
She felt sorry she had disturbed the __________ calmness of a man she respected.
Jason has been preparing carefully for his English examination so that he could be sure of passing it at his first ___________.