His failure in the experiment suggested that he his teacher’s proper instructions.A. shou

问题补充：

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

答案：

A. should not have followed

B. should not follow

C. mustn’t have followed

(答案→)D. hadn’t followed

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。