I am terribly sorry that I __ you so much.Atroubled Bwould t

題目：

I am terribly sorry that I __ you so much.Atroubled Bwould trouble C.have troubled D.did trouble
火速,說明理由

解答：

C
A不合句法,因有AM,所以後面也要加一個字,這就是have/had
B是未來形式,但句子是表達I之前給了別人很多煩惱
D不合句法
did trouble you so much,did有做,的確之意,所以錯