I myself more— it was a perfect day.
A. shouldn’t have enjoyed
B. needn’t have enjoyed
C. wouldn’t have enjoyed
D. couldn’t have enjoyed
网友回答
A. shouldn’t have enjoyed
B. needn’t have enjoyed
C. wouldn’t have enjoyed
(答案→)D. couldn’t have enjoyed
解析：句意：这天我玩得最高兴了，这天是美好的一天。否定词+形容词的比较级表示最高级。根据perfect可知这天我很高兴，故选D。