She on her work so much that she didn’t notice that a crowd of people had around her. A．focused; focusedB．fixed; gatheredC．concentrated; concentratedD．carried; collected 题目和参考答案——青夏教育精英家教网——

题目内容

She ________ on her work so much that she didn’t notice that a crowd of people had _______around her.

A．focused; focused	B．fixed; gathered
C．concentrated; concentrated	D．carried; collected

B

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