I’ve known Sarah for nearly ten years. She _________ once my customer.A．isB．has_刷题宝

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I’ve known Sarah for nearly ten years. She _________ once my customer.

A．is	B．has been
C．was	D．had been

上一题下一题 0.64难度单项选择更新时间:2016-05-17 05:48:50

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