9. His calm response in a difficult situation seemed to ______ great confidence and experience.
(A)betray
(B)betoken
(C)conceal
(D)imitate
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統計: A(1), B(37), C(10), D(3), E(0) #3866623
統計: A(1), B(37), C(10), D(3), E(0) #3866623