Question

they made shoes in that factory into passive​

Answer 1

Answer:

Shoes are made by them in that factory.

Answer 2

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Shoes were made by them in that factory.

Structure :

Subject + was/were + past participle form of the main verb + preposition + Object

Extra Information :

The given active sentence is in the simple past tense so we have to follow the structure of simple past tense when we are going to make it passive.