You ________ have booked the tickets in advance; there were plenty left.A．needn’_刷题宝

题干

You ________ have booked the tickets in advance; there were plenty left.

A．needn’t	B．can’t
C．shouldn’t	D．mustn’t

上一题下一题 0.85难度单项选择更新时间:2018-06-19 08:04:49

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