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________ on the subject for half an hour, Liu Ying suddenly stopped.
| A．To be worked | B．To work |
| C．Having worked | D．Having been worked |
-- _____ was it ___ makes him so upset.-- What you said at the meeting.
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Beijing plans to build more Olympic Games sites in universities____ resources after the Games ____.
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--- Would you like to go to the concert with me, Mary?
--- I have got no interest in it; ____, I have lots of homework to do.
| A．otherwise | B．besides | C．however | D．therefore |
Shelly had prepared carefully for her biology examination so that she could be sure of passing it at her first _____.
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The young mother saw her baby fall to the ground, _____ brought her heart to her mouth.
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