His failure in the experiment suggested that he ________ his teacher’s proper instructions.
A.should not have followed
B.should not follow
C.mustn’t have followed
D.hadn’t followed
网友回答
D解析本题考查suggest的用法和时态。suggest在此意为“表明”，后接宾语从句用陈述语气。“没服从老师的指导”应该在suggested之前发生，故用过去完成时。