______ you do the experiment carefully, you would make discoveries others wouldn’t make.
____________ poverty, wars _____________ thousands of lives in Africa so far.
Being aware of the__________of the disaster, some famous stars organized a charity concert to raise money for the victims.
If we learn to accept change and appreciate what is new and different, we will be well-prepared for whatever the future may have _______.
—Though it __________ in the desert most of the year, people still live there.—That’s the case. They say east or west home is the best.
Many experts seem to agree that _______ certain limit should be set on ________ consumption of cars to ease air pollution.