题目内容

【题目】People plant a lot of trees on Tree Planting Day every year.（改为被动语态）

A lot of trees __________ __________ on Tree Planting Day every year.

【答案】are planted

【解析】

句意：人们在每年植树节都会种很多树。

题目要求改为被动语态，根据题目中plant和“every year”可知，句中时态为一般现在时，所以此处使用一般现在时的被动语态，结构为is/are done；主语trees是复数形式，所以be动词用are；动词plant的过去分词为planted。故填are；planted。

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【3】The electronic sensors inside the thermometers can measure the heat and read the____________ of the skin.

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【4】Which one of the following might not affect the accurate results?

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