阿摩線上測驗
40. _______ of the area, the Crystal River begins in the mountain and winds more than 100 miles to the west.
(A) True gem
(B) A true gem
(C) It is true gem
(D)It is a true gem
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統計： A(33), B(61), C(12), D(36), E(0) #1782253
統計： A(33), B(61), C(12), D(36), E(0) #1782253
