1. Cooking calls for _______ patience and time but it is _______ enjoyable experience.
A. a; the B.不填; an C. the; an D. a; 不填
2. The toughest thing about success is _______ you have to keep on being a success.
A. that B. when C. what D. why
3. More and more people will fall in panic, as the expert predicts, if not _______ properly.
A. comforting B. comfort C. comforted D. being comforted
