He is so busy.He cannot afford enough time with his son________he wants to.(2013·四川，7)
| A．even if | B．as if |
| C．because | D．before |
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He is so busy.He cannot afford enough time with his son________he wants to.(2013·四川，7)
| A．even if | B．as if |
| C．because | D．before |
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