Only after______ requests by the tenants did the super-intendant do something about the broken intercoms in some of the apartmen

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问题 Only after______ requests by the tenants did the super-intendant do something about the broken intercoms in some of the apartments.

选项 A、repeat
B、repeated
C、repeating
D、repetition

答案B

解析 横线处所填单词修饰名词“requests”。过去分词(B)“repeated”和现在分词(C)“requirements”都可作形容词。被修饰的名词和分词之间如果是被动关系,就用过去分词,如果是主动关系就用现在分词,“request”和“repeat”是被动关系,故选B。
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