. Only when class began ______that he had left his book at home.
.—Why don't we just leave it until tomorrow?—________ I'm dead tired today.
—I forgot my mother's birthday!—________ Better keep it in mind next year.
—Would you mind giving me a lift?—________. I am happy to.
— I wonder if I could make a living by writing.—________?
—I hear you are to go to Tibet alone?—________. It's my dream to go on an adventure there.