—What should we pay more attention to if we go north in winter, Mum?
—Nothing much. Take warm clothes _____
the weather is cold.
| A．as long as | B．now that |
| C．if | D．in case |
Li Na is a Chinese tennis player, who is said ________ the world championship last year.
| A．to win | B．to have won |
| C．won | D．to have been won |
If he takes up this job, he will have no choice but ________ a much greater challenge.
| A．meets | B．meeting |
| C．to meet | D．meet |
New technologies have made ________ easier to enjoy life than ever before.
| A．that | B．this |
| C．one | D．it |
The California Earthquake took place at 5:15 a.m., and _______ for only a minute.
| A．having lasted | B．to last |
| C．lasted | D．lasting |
By the time the tornado ended, more than 700 people ________.
| A．have killed | B．have been killed |
| C．had killed | D．had been killed |