[单选题]Directions: In this part there is a sentence with four choices marked A, B, C and D. Choose the one that best completes the sentence.
Most people don't realize the amount of effort（）in writing a novel.

having involved

involving

involved

involve

正确答案：C

题目解析

本题考查非谓语动词的使用。
“effort努力”和“involve需要”之间的逻辑关系为被动，故需使用过去分词作后置定语进行修饰，C选项符合题意。
句意：绝大多数人意识不到创作一部小说所需投入努力的多少。

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[单选题]Directions: In this part there is a sentence with four choices marked A, B, C and D. Choose the one that best completes the sentence.Most people don't realize the amount of effort（ ）in writing a novel.