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Mr. Baker, a dozen students want to see you. () they wait here or outside?A.ShouldB.Wi..
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Be quiet! They () a meeting in the next room.A.are havingB.haveC.were havingD.will had..
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正常月经周期第9天宫颈黏液出现A.典型羊齿状结晶B.不典型结晶.....
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In autumn, the()fall down from the trees.A.leafB.leafsC.leaves..
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报刊投递子系统的投递卡数据包括()。A.整订的加卡B.破订的.....
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Fortunately, Jack was only slightly injured in the traffic()A.incidentB.eventC.caseD.acc..
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