根据网考网考试中心的统计分析,以下试题在2018/7/20日托业考试习题练习中,答错率较高,为:65%
【单选题】Only after ______ requests by the tenants did the superintendant do something about the broken intercoms in some of the apartments.
A.repeat
B.repeated
C.repeating
D.repetition
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