【题目】If you _____ regret things you did or didn’t do in the past, then you won’t be able to move forward.
A. actually B. briefly C. casually D. Constantly
在线课程【答案】D
【解析】
试题分析：考查副词。句意：如果你经常后悔你做过的事情或者你在过去没做过的事情，那么你很有可能不能向前看。A. Actually事实上；B. Briefly简短的；C. Casually随意的；D. Constantly经常性，连续性；根据词义可知是经常后悔，故选D项。