—Have you been to the United States?—Yes, only once. I ________ there only for

题干

—Have you been to the United States?
—Yes, only once. I ________ there only for seven days.

A．have stayed	B．was staying
C．stayed	D．had stayed

上一题下一题 0.64难度单项选择更新时间:2015-01-15 10:21:22

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