Looking out of the window, I saw the leaves by the wind and whirled into the air.
33. _______ 30 minutes_______, we might as well go to the café for a drink.
32. So many great events ________that it is bound to be a most special year in Chinese history.
31. It’s not easy for experts to ______ H1N1 flu in humans from regular human seasonal influenza.
30. The sweater my sister knitted for me ______ twice the size it should have been. It had to be kept for later use.
29. —Has he changed his mind? —Yes. After some hours of discussion, I ______ to talk him into accepting the new plan.