.He voiced a doubt at the company meeting ______works hard can be______they want to be.
| A．that whoever, what | B．whether whoever, whatever |
| C．which who, whatever | D．if who, whatever |
At times the balance in nature is ______，resulting in a number of possibly unforeseen effects.
| A．troubled | B．confused | C．disturbed | D．puzzled |
Generous public funding of basic science would______a good many benefits for the country's health，wealth and security.
| A．result from | B．lead to | C．lie in | D．settle down |
_____，they set out to break the record for crosschannel swimming.
| A．Well equipped | B．Well equipping | C．Well equips | D．To equip |
There is still much to discuss.We shall，______，return to this item at our next meeting.
| A．therefore | B．however | C．otherwise | D．briefly |
—What made you so delighted at Christmas?
—______.
| A．I received much more presents than others |
| B．Because my parents promised me a new car |
| C．My uncle's coming back from abroad |
| D．As there was an unusual celebration |