In order to produce more grain, it________that the area of farmland_____.

.I tried to call on you last week but your dog simply ____ not let me come through the gate.

—______ you pass the examination on the first attempt?—Of course. You know, I have been preparing for it for a long time.

-- May I smoke here?-- If you____, that's the smoking section over there.

         for the free tickets, I would not have gone to the films so often.