If you sit in an office all day long and rarely _____, you’re likely to suffer from neck and back pains.A.cut inB.work outC.break downD.stay up
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B解析试题分析：考查词组：A. cut in插话，B. work out制定出，锻炼，结果是，C. break down崩溃，抛锚，垮掉，D. stay up熬夜，句意：如果你整天呆在办公室，很少锻炼，你可能得颈部和背部的疼痛。选B。
考点：考查词组