問題詳情

11. A radio medical advice service _____ ships of all nationalities and no charge is made forthis service.
(A) is available to
(B) is available for
(C) are available to
(D) are available for

參考答案

答案：B
難度：適中0.5
統計：A(2),B(2),C(0),D(0),E(0)

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