His failure suggested that hethe teacher’s suggestionsA. can’t have followedB. needn’t fo

问题补充：

His failure suggested that hethe teacher’s suggestions．

A. can’t have followed

B. needn’t follow

C. mustn’t have followed

D. shouldn’t follow

答案：

(答案→)A. can’t have followed

B. needn’t follow

C. mustn’t have followed

D. shouldn’t follow

解析：句意：他的失败表明了他不可能听了老师的建议。can’t have done不可能做了某事；must表推测不能用于否定句；因为现在已经失败，所以这是对过去的推测，过去没有听从老师的建议。故选A。