问题补充：
His uncle for a week.
A. has arrived here
B. has been here
C. came here
D. will get here
答案：
A. has arrived here
(答案→)B. has been here
C. came here
D. will get here
解析：句意：他的叔叔已经在这儿一周了。句中有for a week表示一段时间，用现在完成时，同时谓语动词要有延续性，故选B
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