You have so many bad habits,which ______ A cought get rid of

題目：

You have so many bad habits,which ______ A cought get rid of B.ought to get rid of
C ought be got rid of D ought to be got rid of

解答：

選D
前半句的意思是：你有很多壞習慣；which指代的就是「bad habits」
然後看,習慣自己不能改,正能是被人改,因此先排除AB項
ought to （be）本身是固定搭配,意爲「應該」,放回到句子裡,後半句的意思就是：「你應該改掉（這些習慣）」.所以排除C,選D