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Key: Can / Could ( part 3 )

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  • Key: Can / Could ( part 3 )

    1. couldn't 5. can
    2. couldn't 6. can / can't
    3. could / couldn't 7. can / can't
    4. could / couldn't
    (Tư liệu tham khảo: Betty Schrampfer Azar . Understanding and Using English. 3rd ed.)

    Review exercise
    Sửa lần cuối bởi vip.pro.09; 24-03-2017, 11:07.
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