3. ______ , bottle-nosed dolphins become talented performers at many aquariums.(A)When to train (B)A

問題詳情

3. ______ , bottle-nosed dolphins become talented performers at many aquariums.
(A)When to train
(B)Are training
(C)When trained
(D)To train them

參考答案

答案：C
難度：簡單0.875969
統計：A(5),B(1),C(113),D(10),E(0)

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