主动语态与被动语态互换1.People should pick apples and pears i

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1.Apples and pears should be picked by people in autumn.
2.We should speak English in and out of the class.
3.We will build a new museum in this city.
======以下答案可供参考======
供参考答案1:
apples and pears should be picked by people in autumn
we should speak english in and out of the class
We will build a new museum in this city
其实主变被，就是加个be动词在把动词变成过去式就好了，被变主就更简单了，把be动词去掉，把动词恢复原态就行了，希望对你有帮助。