—Sorry, I didn’t hear the door bell ring.
—Your bell         . Perhaps it needs repairing.
A．never workedB．is never working
C．never worksD．had never worked
C
頻度副詞一般搭配一般現(xiàn)在時態(tài)使用，句子主語the  bell為單數(shù)第三人稱，謂語動詞后面加s，故選C。
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