Former IOC (the International Olympic Committee) president Samaranch’s death is believed ____ by heart attack.
| A．causing | B．being caused | C．to be caused | D．to have caused |
We to finish the work before dark, but the heavy rain held us up.
| A．meant | B．was meaning |
| C．had meant | D．would mean |
China’s search engine Baidu has announced the top topics discussed by netizens in 2013, research from its linked website Hao123.com.
| A．kept on | B．passed on |
| C．based on | D．spent on |
On September 22, more than 150 Chinese cities, including Beijing, observed world Car Free Day to low-carbon travel.
| A．promote | B．protect |
| C．imitate | D．contact |
—Wow, winter swimming is so fascinating! Shall we have a try?
—! It is not my piece of cake.
| A．Never mind | B．Good idea |
| C．Neither you nor me | D．Rather you than me |
It is necessary that the government solutions for the problems of air pollution to create a clear environment.
| A．should have found | B．could have found |
| C．could find | D．should find |