6. The singer has a unique voice. Even though he wears a mask in the show, the audience can ________ him immediately.
(A) rely
(B) relay
(C) reduce
(D) recognize
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統計: A(16), B(25), C(36), D(102), E(0) #3438398
統計: A(16), B(25), C(36), D(102), E(0) #3438398