问题
选择题
| Before they reached the house, a new wave came, _______ down trees and brought down some walls. |
A. sweeping B. swept C. had swept D. having swept |
答案
答案：B
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| Before they reached the house, a new wave came, _______ down trees and brought down some walls. |
A. sweeping B. swept C. had swept D. having swept |
答案：B