阿摩線上測驗
29. Cynthia _____ in a bookstore since she graduated from university in 2015.
(A) works
(B) worked
(C) is working
(D) has been working
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統計： A(14), B(16), C(15), D(319), E(0) #2897531
統計： A(14), B(16), C(15), D(319), E(0) #2897531
