—Iwasreallyanxiousaboutyou.—I’mterriblysorry.I

问题详情：

—I was really anxious about you.

—I’m terribly sorry.I________home without a word.

A．mustn’t leave                                          B．shouldn’t have left

C．could have left                                         D．need have left

【回答】

*：　B

shouldn’t have done句意为“本不应该做而事实上做了”。

知识点：虚拟语气与情态动词

题型：选择题