【題目】We found _____ necessary to protect the environment.
A.it
B.this
C.that
D.what

【答案】A
【解析】句意為:我們覺(jué)得保護(hù)環(huán)境很有必要。根據(jù)語(yǔ)境可知,這里動(dòng)詞后應(yīng)接賓語(yǔ)。由于句子的正真賓語(yǔ)為后面的動(dòng)詞不定式,為了避免句子的頭重腳輕,常用代詞it作形式賓語(yǔ)。結(jié)合選項(xiàng)可知應(yīng)選A。

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