请教几个英语单选题

题目

请教几个英语单选题
这是新概念二35课的课后习题
8.He hasn't regretted it.He ______it.
A.isn't sorry about B.doesn't pity C.isn't pleased with D.doesn't laugh about
背景是,这个人先是开出租车的,后来改行开汽车,最近他不觉得遗憾当汽车司机.
答案选A为什么不选B B 也是说并不遗憾啊?
11.The thief dropped the bag.He_____.
A.let it B.left it C.fell it D.let it fall
可是为什么C不行呢?同样是掉下来啊~

答案

A.
pity ..同情,怜悯.不是这里的后悔,遗憾地的意思.
D..
he threw it..还差不多.是说把包扔了.fall 是说东西本身掉.如果说he fell.是说这个贼跌倒了