The factory used 65 percent of the raw materials, the rest of which ________ saved for other purposes.
How can you expect him to make any improvement ________you never give him an opportunity to have a try?
The 2016 Summer Olympic Games will be held in Rio de Janeiro, Brazil, which becomes the first city in South America _________ Olympics.
—For the long-term development, we have to attach importance to the quality of our products.—That’s right. ______.
We students had better ______ some sports because sports can give us a perfect figure and protect us from getting illness easily.
Finally, the young explorer, through a series of lucky accidents, arrived ______ was so-called the valley of death by the locals.