Most people will gradually gain confidence as they________life.
A.get through B.look through
C.break through D.go through
It is requested that the machine be operated according to the________.
A.introductions B.explanations
C.suggestions D.instructions
-Mary,could you please post the letter for me while you are out?
-________
A.I'd rather you didn't. B.It's OK with me.
C.What for? D.By all means.
Tom's first job was at a local restaurant in his early twenties,________he worked for seven years.
A.where B.when
C.which D.that
She felt ________ awkward because of her bad performance on the stage.
A.extremely B.actually
C.frequently D.exactly
More and more carbon dioxide is being released into the air,________the more severe global warming effects.
A.contributed to B.to contribute to
C.contributing to D.to be contributed to