6. In a fit of rage, the difficult customer began to _______ the staff over the long wait, loudly berating them with insults and accusations.
(A) overhaul
(B) vituperate
(C) invigilate
(D) scribble
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統計: A(3), B(23), C(5), D(2), E(0) #3233797
統計: A(3), B(23), C(5), D(2), E(0) #3233797