Professor Smith will come here to give a speech．All the preparations must be _____ before 5 o’clock．
| A．in time | B．in sight | C．in place | D．in control |
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Professor Smith will come here to give a speech．All the preparations must be _____ before 5 o’clock．
| A．in time | B．in sight | C．in place | D．in control |
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