题目内容
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 |
D
略
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题目内容
| A.had wiped out | B.have wiped out |
| C.had been wiped out | D.have been wiped out |