He told me a piece of news, terrible.
A. I think it is
B. I think which is
C. which I think it is
D. which I think is
网友回答
A. I think it is
B. I think which is
C. which I think it is
(答案→)D. which I think is
解析：考查定语从句，先行词是a piece of news，定语从句中I think是插入语，用which引导做定语，it是多余的，句意：他告诉我一个我认为很可怕的消息。选D。