1. The shop sells these pens in packs of a _________ , which is cheaper than buying them one by one.
(A)cent
(B)dozen
(C)loaf
(D)meter
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統計: A(0), B(11), C(2), D(0), E(0) #3874080
統計: A(0), B(11), C(2), D(0), E(0) #3874080