We should always keep in mind that decisions often lead to bitter regrets.A. hastyB. inst

问题补充：

We should always keep in mind that decisions often lead to bitter regrets.

A. hasty

B. instant

C. prompt

D. rapid

答案：

(答案→)A. hasty

B. instant

C. prompt

D. rapid

解析：几个选项的意思是：hasty意为“草率的，轻率的”与后面的bitter regrets构成因果关系；instant意为“立即的，即刻的”，prompt意为“敏捷的，及时的，迅速的”；rapid意为“快的，迅速的”。本句的意思是：我们应该永远牢牢记住，草率的决定常常导致后悔不堪。