【題目】The government made laws to prevent the wild environment from the pollution. (改為被動語態(tài))

Laws ________ ________ by the government to prevent the wild environment from the pollution.

【答案】were made

【解析】

句意：政府制定法律來保護野外環(huán)境不受污染。

改為被動語態(tài)，被動be+done，made一般過去時，助動詞用was/were；laws復數(shù)，用were；故填were made。

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