问题
选择题
I think you must be mistaken about seeing him at the theatre; I’m sure he _____ abroad all week.
A．is
B．was
C．has been
D．had been
答案
C。
用现在完成时表示影响或结果，即他整个星期都在国外，所以你说你在剧院见过他，你一定是搞错了。
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