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【題目】In order to protect children's ________ (tooth), parents should ask them not to eat too many candies.

【答案】teeth

【解析】

句意為:為了保護(hù)孩子們的________,家長(zhǎng)們應(yīng)該讓孩子們不要吃太多糖果。根據(jù)句意和常識(shí)可知此處應(yīng)用復(fù)數(shù)形式。故填teeth

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