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单选题_____A shippingB installationC buildingD compilation
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单选题_____A dependenceB hassleC patienceD cooperation
单选题_____A themB herC hisD it
单选题Our future will be ______ on what services we can provide.A basicB basedC basingD base
单选题What is the main advantage of a rain barrel system?A It benefits the Earth by recycling water.B Its efficiency increases in areas with little rainfall.C It utilizes technology that is centuries old.D It results in lower utility payments.
单选题The word “tentative” in paragraph 2, line 1 of the letter is closest in meaning to ______ .A unusualB excitingC unconfirmedD attached
单选题The discount card given to our frequent buyers is valid ______ one year.A atB inC forD up