____ the workers’ working conditions, the boss will allow them to have a coffee break.
A．ImprovingB．To improveC．Having improved D．Improved
B
本題考查非謂語動(dòng)詞。結(jié)合句意：“為了改善工人的工作做條件，老板將允許他們停下來喝杯咖啡�！笨芍颂�非謂語動(dòng)詞應(yīng)作目的狀語，故選B項(xiàng)。
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