The unemployment rate in this district from 6% to 5% in the past two years.
| A．has fallen | B．had fallen | C．is falling | D．was falling |
After his journey from abroad, Richard Jones returned home, _______.
| A．tired | B．tiring | C．being tired | D．having been tired |
--You've agreed to go? So why aren't you getting ready?
--But I ________ that you would have me start at once.
| A．don't realize | B．hadn't realized | C．didn't realize | D．am not realizing |
Low-carbon lifestyle is of great benefit to improve the world environment．____ can be
enjoyed from it until you have a deep under, standing of it，however．
| A．Something | B．Nothing | C．Few | D．Much |
The scientist was rewarded by the government for _____such a great，contribution to the
country．
| A．make | B．making | C．being made | D．having made |
Too high house prices can be brought under control，____the authorities introduce a series
of regulatory policies．
| A．even if | B．as if | C．so that | D．provided that |