To order tickets for the 2016 Riode Janeiro Olympic Games, just call 00982012. It _______ be simpler.
| A．must | B．could | C．mustn’t | D．couldn’t |
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To order tickets for the 2016 Riode Janeiro Olympic Games, just call 00982012. It _______ be simpler.
| A．must | B．could | C．mustn’t | D．couldn’t |
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