You had better (to go) there.
You had better gone there.
You had better went there.
You had better go there.
Correct
You had better will go there.
Explanation:
Correct Answer is: You had better go there.
• Had better এর পরে verb এর base form বসে।
• Subject + had better/would better/had rather + verb এর base form.
• সুতরাং, নিয়মানুযায়ী সঠিক উত্তর – You had better go there.