【題目】It is important for students ________ to do things for parents.

A. learn B. to learn C. learning D. learns

【答案】B

【解析】

句意:對(duì)于學(xué)生來說,學(xué)會(huì)為父母做事是很重要的?疾閯(dòng)詞不定式。A. learn學(xué)會(huì),動(dòng)詞原形;B. to learn動(dòng)詞不定式;C. learning動(dòng)名詞;D. learns第三人稱單數(shù)形式。It's+形容詞+for sb.to do sth.是固定句型,意思是“做某事對(duì)于某人來說是的”,其中it是形式主語,真正的主語是后面的動(dòng)詞不定式,故答案選B。

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