In the global economy，a new drug for cancer，________it is discovered，will create many economic possibilities around the world.
| A．whatever | B．whoever | C．wherever | D．whichever |
You must learn to consult your feelings and your reason________you reach any decision.
| A．although | B．before | C．because | D．unless |
I took my driving license with me on holiday，________I wanted to hire a car.
| A．in case | B．even if |
| C．ever since | D．if only |
Every evening after dinner，if not ________ from work，I will spend some time walking my dog.
| A．being tired | B．tiring |
| C．tired | D．to be tired |
—Have you got any particular plans for the coming holiday?
—Yes.________，I'm going to visit some homes for the old in the city.
| A．If ever | B．If busy |
| C．If anything | D．If possible |
—Who should be responsible for the accident?
—The boss，not the workers.They just carried out the order ________.
| A．as told | B．as are told |
| C．as telling | D．as they told |
From space, the earth looks blue.This is ________about seventy－one percent of its surface is covered by water.
| A．why | B．how | C．because | D．whether |
________ one of you breaks the window will have to pay for it.
| A．Whoever | B．Whatever |
| C．Whichever | D．Wherever |
There's no way of knowing why one man makes an important discovery________another man，also intelligent，fails.
| A．since | B．if | C．as | D．while |
The man showed us such a heavy stone ________ no one could lift it.
| A．that | B．as | C．which | D．and |
We’ll have a picnic in the park this Sunday ________ it rains or it’s very cold.
| A．since | B．if | C．unless | D．until |
Nelson Mandela is，__________ the greatest man of the 20th century，certainly among the most extraordinary leaders．
| A．if there | B．if any | C．if not | D．if so |
--- Could I have a word with you，Mr. White?
--- OK．__________ you make it short．I've got a meeting in five minutes．
| A．as far as | B．if only |
| C．so long as | D．now that |
_______ you go, _______ you should keep in mind is that you are a Chinese.
| A．Wherever, what | B．wherever, whatever |
| C．Where, whatever | D．Where, what |
She was such a proud person that she would die ______ she would admit she was wrong.
| A．rather than | B．until | C．after | D．before |
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