I think so.
I think that is my responsibility.
I think that one is better.
I think the travel company made my reservation.
I think this is enough.
I think this is it.
I think we should break up.
I think we're lost.
I think you made a mistake on the amount.
I think you're right.
I told you to ask someone else.
I told you to go away.
I told you to help your mom.
I told you to leave me alone.
I told you to stop calling me.
I used to drink a lot.
I used to drink coffee.
I used to hate math.
I used to like working.
I used to travel a lot.