I think you should ____your friend to help you?

I think you should ____your friend to help you? I,____your good friend,will try my best to help you out A.wh ____(介词)your good friend .I should help you. i think you should go to cpllege. I,____your close friends,will try my best to help you out.A. Should （ ）,I would try to help you to appl I think you should ____. you should remember!i think I think you will be ____(friend ) to us. I think you should go back to your plan, which I think you should exercise a lot to s____healthy. I think you should go to bed early every day?