43
(A) are to
(B) shall
(C) were to
(D) will

答案：登入後查看
統計： A(13), B(16), C(38), D(16), E(0) #1256514

詳解 (共 1 筆)

#3804761

concentration翻譯：專心, 專注，專心, 數量, 集中；聚集；匯集, 濃度。

were翻譯：（be 的過去式） 

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