问题
选择题
| _ of the mountains in that area covered with trees and grass. |
A. Two fifth; is B. Two fifth; are C. Two fifths; are D. Two fifths; is |
答案
答案：C
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| _ of the mountains in that area covered with trees and grass. |
A. Two fifth; is B. Two fifth; are C. Two fifths; are D. Two fifths; is |
答案：C