Question

I think you should come back tomorrow. (Begin: you had....)

Answer 1

That should be "You have...." , since the action is in future it can't be written in past perfect tense , it can be only written is present perfect tense

The answer is You have to come back tomorrow.

Hope This Helps You!

Answer 2

Hey!

There are some mistakes in the question.

The question should be like:

I think you should come back tomorrow. (Begin with: You have...)

As it is given in future and had comes in past perfect tense. So the questions can't be like that.

So,the answer is:

You have to come back tomorrow.

Hope It helps You!