of the mountains in that area covered with trees and grass. A. Two-fifth; is B. ——青夏教育精英家教网——

摘要： 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

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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

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__________ of the mountains in that area _______ covered with trees and grass．

Two fifth; is

Two fifth; are

Two fifths; are

Two fifths; is

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