摘要： We found A necessary to protect the environment. A. it B. this C. that D. what [考点] “主语+find+ it +adj. + to do sth 为一常用句型.意为“某人发现做某事-- .其中it为形式宾语(此时不可用this/that/one等代词替换).真实的宾语为后置的不定式短语.
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necessary to protect the environment.