题目内容
A lot of what we ________ is made from raw materials which are not renewable.
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Redecorating the house is a challenging task. It's necessary to __________ the wall paper first.
__________, what is the point in taking part in the competitive event if the result is only to prove how incompetent you are?
The new system designed to _________ harmful emissions from factories will be put into use soon.
He was _____________ when he discovered that he didn't have enough money to pay for the red wine he had ordered.
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