Great changes _____ in the last twenty years in China.
| A．took place | B．have taken place |
| C．were taking place | D．have been taken place |
President Bush said if terrorists __________ the United States, war would be what they got.
| A．declared a war for | B．declared war to |
| C．declared a war on | D．declared war on |
Since the general retired from the army, he __________ himself in writing his memories.
| A．is devoting | B．has been devoted |
| C．had occupied | D．has been occupying |
—Yao Ming and Yi Jianlian have finished their season in NBA this year.
—Yes, they __________ better but for the injuries.
| A．could have done | B．can do |
| C．couldn't have done | D．can't do |
—Have you completed the project?
—I'm sorry to tell you we __________ it when we found it cost too much.
| A．completed | B．abandoned | C．accepted | D．conducted |
—I can't stand Tom any more. He's lazy, selfish and...
— __________ He isn't so bad actually.
| A．Oh, come on! | B．Up to you! |
| C．You are right. | D．Go ahead! |