Unforgettable ______ her pale blue eyes that flashed like diamonds and thin lips wore a pleasant smile.
| A．had been | B．were | C．was | D．is |
Nearly a month had gone by they showed some sign of giving up the price for which they had held out.
| A．until | B．while | C．before | D．so that |
. In the years , the city government will take effective measures to bring the price of the house under control.
| A．following | B．followed | C．follow | D．to follow |
. According to some doctors, one of the ways to prevent us from growing old is to make sure
that our brains get enough___.
| A．performance | B．exercise | C．experience | D．sport |
. We are faced with the necessity to recognize that having more people implies a lower standard of living.
| A．readily | B．smoothly | C．unavoidably | D．deliberately |
Although many people view conflict as bad, conflict is sometimes useful _______ it forces people to test the relative merits of their attitudes and behaviors.
| A．by which | B．to which | C．in that | D．so that |