题目内容

You have planned a tour with your brother on a holiday; ________ he will not be able to go with you.

[  ]

A.finally

B.fortunately

C.unfortunately

D.seriously

答案:C
解析:

原本计划两个人一起去度假,但最终却有一人不能去,这应该是一件“不幸的”的事。


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