阿摩線上測驗
31. The coffee tastes very ____, not bitter at all.
(A)smooth
(B)smoothly
(C)smoothie
(D)smoother
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統計： A(71), B(40), C(3), D(4), E(0) #3287580
統計： A(71), B(40), C(3), D(4), E(0) #3287580
