题文
【2014山东泰安】Your dream will come true _______ you put your heart and sour into it.
| A．if | B．unless |
| C．although | D．until |
【2014山东泰安】Your dream will come true _______ you put your heart and sour into it.
| A．if | B．unless |
| C．although | D．until |
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