________ the master beat the table with his heavy ruler as he cried, “Silence, please. Silence!”A.SometimeB.SometimesC.some timeD.some times
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B解析思路分析：sometimes表示“有时”是副词，在句中位置比较灵活，可放在句首、句中或句末．如Sometimes he es late./He sometimes es late./He es late sometimes.他有时来得迟．