__________ abroad for two years, he will come back within two weeks.A．Having stu_刷题宝

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__________ abroad for two years, he will come back within two weeks.

A．Having studied

B．Studied

C．To study

D．Studying

上一题下一题 0.85难度单项选择更新时间:2010-07-21 07:33:01

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