题目内容：

第一道；--she shouldn`t have done that sort thing.
--whatever she did was reasonable ,_____to what you had done.
--Besides,it`s none of your business.Get down to _______your work.
A.comparing ； doing B.comparing ； do
C.compared ； doing D.compared ； do
第二道； This is a very interesting book.I`ll buy it ,______.
A.how much may it cost B.no matter how it may cost
C.however much it may cost D.how may it cost.
第一道题选C 第二道题选C .第二道题我选B 为什么选C呢?