Before petroleum______, another way has to be found.
相似题目
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A piece of work or presentation by an artist can be called his or her ______ if it is the last he or she made before death or retirement. Now, it means the final effort of any person.
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Before (write) ________ an application letter, you should be aware what kind of people the employer needs.
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before的同根词有______________。
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I wish I ________ you before.
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Oil companies in the U.S. are already beginning to feel the pressure. Refinery workers and petroleum-equipment-manufacturing employees are being _______.
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Please _____ before entering.
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______refers to an alcoholic drink taken in the morning to cure the pain in your head that was caused by drinking too much alcohol the night before.
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By 1911, Standard Oil _______, _______, and _______ most of the nation’s petroleum.
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18. Before going further, let me ________ an important point about the organizations that are involved in the research program.
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The plane circled the _________ before landing.
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If you ask an agent to help you find an apartment, you have to pay him a ____ before you can rent the house.
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The speaker ________ his notes before the lecture.
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When you apply for an E-mail box, you are expected to fill in your necessary personal information before you _____ the form.
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All visitors tothe lab(expect) ______ before to take off their shoes before they enter.
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Before the Independence War, _________.
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I can’t give you an answer before I ______ carefully. A. having been thinking it over B. think it over C. have thought it over D. thought it over
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________ are a specialized means of shipping petroleum, natural gas, and chemicals from sources to markets.
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He _______ working before 6o’clock.
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He waited______before he took revenge.
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I______ all my work before I________.
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Before 2008, poor people in America ______.
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The Middle East region, including the countries such as Iraq, Saudi Arabia and so on, is ______ in petroleum deposits.
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Before he started work, I asked the builder to give me an ________ of the cost of repairing the roof.
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I discovered an addiction to housework which I had never felt before________.
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