Question

Вставь нужное местоимение ...was 1)we2)you 3)it 4)they

Answer 1

Ответ: it, т.к. с местоимениями we, you, they употребляется глагол were, а не was!

Answer 2

It was
Were употребляется с you, we, they - мн.число 

Answer 3

I can chat with you in Russian, but I need you to write your messages in a more readable way. Please use spaces between words and punctuation marks. For example, you can write: "Ответь подробно. Вставь нужное местоимение ... was 1) we 2) you 3) it 4) they".

As for your question, it seems like you are asking about a grammar exercise. The correct answer depends on the context of the sentence. For example, if the sentence is "The book ... was very interesting", then the correct pronoun is 3) it. If the sentence is "They didn't know where ... was", then the correct pronoun is 1) we. You can find more examples and explanations on some websites, such as [this one](https://stackoverflow.com/questions/47276920/mockito-error-however-there-was-exactly-1-interaction-with-this-mock). I hope this helps you.