問題詳情

21 At summer camp, Mary_____rockclimbingbecause,secretly,she was scared of heights.
(A)opted out of
(B)held onto
(C)concentrated on
(D)was addicted to

參考答案

答案：A
難度：適中0.6
統計：A(3),B(0),C(2),D(0),E(0)

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