iversity is saving $ 300,000 per year by its energy ______ efforts.

It is the driver rather than the children ______responsible for the accidents.

He was known to have been hanging about and was not expected to pass the test ______, his failure came as no wonder to his parents

When he heard the _________ news, he was so _______.

Hey，Tina，what about going to the movies tonight —Oh，I can’t go out on school nights.It’s one of my family________.