The last decade of the 21st century ________ the rapid, steady development of China in various fields.
| A．witnessed | B．was witnessed | C．is witnessed | D．had witnessed |
It was the President himself______ opened the door．
| A．who | B．when | C．which | D．where |
The actor still remembers the excitement in his class when a female classmate _____ for a key role in a Zhang Yimou film．
| A．is chosen | B．was chosen | C．chooses | D．chose |
What's your opinion of Mr．Li's request that we ______ spend half an hour reading English aloud every morning?
| A．would | B．should | C．must | D．could |
The United Nations are evaluating the damage caused in Haiti earthquake, while in Chile the government itself ______ the lead role．
| A．is taking | B．was taking | C．took | D．had taken |
Put yourself in situations where you're forced to communicate in English, ______ you'll see more progress over time.
| A．until | B．or | C．but | D．and |