【題目】It is necessary that a child’s first eye exam _____ at the age of six months old.

A.wasB.wereC.beD.is

【答案】C

【解析】

考查虛擬語氣在主語從句中的運用。句意:孩子的第一次眼睛檢查必須在六個月大的時候進行。固定句型:It is necessary that 主語+should+動詞原形+其他。該句型中謂語動詞用should加動詞原形,且should可以省略。故選C。

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