America will never again have as a nation the spirit of adventure as it ________ before the West was settled.
(A) could
(B) was
(C) would
(D) did

答案：登入後查看
統計： A(147), B(282), C(189), D(418), E(0) #330496

詳解 (共 1 筆)

#682925
did 代替前面的have....
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