34. It’s reported that in the past 50 years around 80 percent of Beijing’s courtyard houses ______.
| A．had wiped out | B．have wiped out |
| C．had been wiped out | D．have been wiped out |
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34. It’s reported that in the past 50 years around 80 percent of Beijing’s courtyard houses ______.
| A．had wiped out | B．have wiped out |
| C．had been wiped out | D．have been wiped out |
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