Last night's TV news said that by then the death of the missing people __________ yet.
| A．had not been proved | B．had not proved |
| C．have not been proved | D．have not proved |
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Last night's TV news said that by then the death of the missing people __________ yet.
| A．had not been proved | B．had not proved |
| C．have not been proved | D．have not proved |
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