問題詳情
21. The ocean _____ are strong, so be careful when you swim here.
(A) creatures
(B) currents
(C) graduates
(D) efforts
(A) creatures
(B) currents
(C) graduates
(D) efforts
參考答案
答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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