【題目】I think ________ should help their parents do some chores at home.

A.fifteen-year-oldsB.fifteen-year-oldC.fifteen years old

【答案】A

【解析】

句意:我認為十五歲的孩子應(yīng)該幫助他們的父母在家里做一些家務(wù)。

考查年齡的表達。fifteen-year-olds十五歲的孩子,名詞;fifteen-year-old十五歲的,在句中作定語;fifteen years old十五歲,在句中作表語。根據(jù)題干可知從句中缺少主語,用“基數(shù)詞-year-olds”表示“……歲的孩子”。故選A。

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