I myself more-----it was a perfect day.A. shouldn’t have enjoyedB. needn’t have enjoyedC.

问题补充：

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

答案：

A. shouldn’t have enjoyed

B. needn’t have enjoyed

C. wouldn’t have enjoyed

(答案→)D. couldn’t have enjoyed

解析：考查固定句型。句义：我不能过得更加愉快了，因为那是完美的一天。这是一个常用结构：cannot/could not + 比较级表示最高级。说明那一天过得最愉快了，所以D正确。