His failure in the exam suggested that he the teacher’s instructions.A. can’t have follow

问题补充：

His failure in the exam suggested that he the teacher’s instructions.

A. can’t have followed

B. needn’t have followed

C. mustn’t have followed

D. shouldn’t have followed

答案：

(答案→)A. can’t have followed

B. needn’t have followed

C. mustn’t have followed

D. shouldn’t have followed

解析：can用于否定句和疑问句；肯定句中用may。