________ in his book, he didn't notice me ________ I entered the room.A．Devoted;_刷题宝

题干

________ in his book, he didn't notice me ________ I entered the room.

A．Devoted; when	B．Absorbed; while
C．Absorbed; when	D．Devoted; while

上一题下一题 0.64难度单项选择更新时间:2014-07-10 06:12:47

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