–The plane is due to take off at 7:50 from the airport.–________ we fail to arrive there in time. –Try to take another flight then.
—Sorry. I ________ to post the letter for you. —Never mind. ________ it myself after school.
—Do you know if the foottball game has started yet? —Started? It must be certain who ________ by now.
—Did you enjoy the film? —Yes, it’s the best one I ________ these years.
—Will you go to the park now? —Not until I ________ my physics exercises.
—You must have met him the other day. —Oh, no, I ________.