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 |
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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 |
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