________that the government can clear up official corruption，we are________about the future of our country.
| A．Convinced；optimistic | B．Convincing；optimistic |
| C．Convinced；pessimistic | D．Convincing；pessimistic |
Never in my dreams Zhao Benshan’s performance during the CCTV Spring Festival Gala was considered the best.
| A．I could imagine | B．could I imagine | C．I couldn’t imagine | D．couldn’t I imagine |
The woman rushed out she felt the house shaking.
| A．until | B．immediately | C．unless | D．before |
Many scientists believe that global warming, if , will cause extreme climate changes this century.
| A．not stopping | B．no stop | C．not stopped | D．without stop |
---I can’t find that pen you’ve just given me.
---Don’t worry, here’s .
| A．it | B．more | C．another | D．others |
Put yourself in situations where you will be forced to communicate in English,you will see more progress over time.
| A．or | B．so | C．yet | D．and |