This computer ------------- brought a long time ago.
This computer ------------- brought a long time ago.
Explanation
This computer was brought a long time ago.یہ کمپیوٹر بہت پہلے لایا گیا تھا۔
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The above is belong to a past sentence, so we select "was".
"was" is best to keep the meaning of the original sentence
Subject(this computer) + was+ past form of the verb(verb 2) (brought)+ rest of the sentence(along time ago)
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ND29-11-2022