You would have soon my garden at its best if you ______ here last week.

Were

Had been

Should be

None of these

You would have soon my garden at its best if you had been here last week.

اگر آپ پچھلے ہفتے یہاں ہوتے تو آپ کے پاس میرا باغ جلد ہی بہترین ہوتا۔

"Had been" is the correct form of the past perfect tense.

It indicating an action that occurred before another action in the past.

Using "had been" allows the sentence to logically convey that being present last week would have allowed someone to see the garden at its best.