A：We are going to the concert this evening. Will you join us.
我們今天去聽音樂會。你和我們一起去嗎?
B：I'm very sorry I can't.
非常抱歉我不能去。
A：Why not?
為什么。
B：I've been snowed under with since my bosswas away on business.
因為老板出差了，我工作多得忙不過來。
注釋:
be away on business：離開出差
go to the concert：去聽音樂會