问题
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The boiler feed water check valves are located on the _____.
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These magazines are both interesting and instructive. No wonder they______ to the reading
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There are two _______ students on the play ground
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Turn on the television or open a magazine and you ______ advertisements showing happy fami
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Above the trees are hills ______ magnificence the river faithfully reflects on the surfac
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There ________ a book and some magazines on the desk.A.isB.beC.haveD.has