阿摩線上測驗
3. At first, all contestants looked relieved, but as the difficulty of the quiz began to________ ，their smiles disappeared in confusion and dismay.
(A) kick off
(B) sink in
(C) set up
(D) show off
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統計： A(29), B(15), C(19), D(26), E(0) #1028915
統計： A(29), B(15), C(19), D(26), E(0) #1028915