阿摩線上測驗
21 At summer camp, Mary_____rock climbing because, secretly, she was scared of heights.
(A)opted out of
(B)held onto
(C)concentrated on
(D)was addicted to
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統計： A(40), B(4), C(6), D(8), E(0) #1227858
統計： A(40), B(4), C(6), D(8), E(0) #1227858