—Is the doctor your son？Has he graduated from university?—Yes，he in Nan

题干

—Is the doctor your son？Has he graduated from university?
—Yes，he in Nanjing Medical University for 5 years.

A．has been studying	B．studies
C．had studied	D．studied

上一题下一题 0.65难度单项选择更新时间:2017-09-13 11:03:01

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