The annual report summarizes the ______technical support service to estimate the cost of providing it.

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问题 The annual report summarizes the ______technical support service to estimate the cost of providing it.

选项 A、proposed
B、to proposing
C、propose
D、proposes

答案A

解析单词形态：分词作形容词1．选项均为动词propose的不同形式。2．空格处需填入一个形容词，修饰名词technicalsupport service。3．选项中能够充当形容词的分词只有(A)选项proposed，因此(A)为正确选项。

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