_______ is known to us, the dragon stands for China ______the bear symbolizes Russia.
| A．It; but | B．As; while | C．What; while | D．It; when |
It’s unwise to ______ you understand something when you don’t.
| A．speak up | B．find out |
| C．make out | D．make up |
For the citizens of the world’s poorest nations, the future ______ never arrive soon enough.
| A．must | B．should | C．may | D．Can |
All his hard work ______. He was admitted into one of the best universities.
| A．turned up | B．paid off | C．put off | D．turned out |
Junyan added that as a reporter she needed many different skills and ______ to learn new things.
| A．was constantly challenged | B．constantly challenged |
| C．was constantly challenging | D．had constantly challenged |
—Hi, Dr Brown! I'm a little early. Should I wait outside?
—No. ________.
| A．That's right | B．My pleasure |
| C．Come on in | D．Take it easy |