She ____ on her homework in her study now .
A . must work B . can work C . must have worked D . must be working
巧學巧練系列答案科目：高中英語 來源： 題型：
She ____ on her way to school. I just phoned her home and got no answer.
should be B. might have been C. must be D. could have been
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科目：高中英語 來源： 題型：
—What makes her so frightened?
—Oh,it is the mouse that she______on her bed while looking for her watch.
A.came about B.came across C.came through D.came up
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科目：高中英語 來源： 題型：
―What makes her so frightened?
―Oh, it is the mouse that she ___ on her bad while looking for her watch.
A. came about B. came across C. came through D. came up
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科目：高中英語 來源：2013屆江西省高二第二次月考英語題 題型：單項填空
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
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