28. John______ send Mary flowers once a month before they got married. But now he never does.
(A) should
(B) used to
(C) was used to
(D) was afraid to
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統計: A(25), B(318), C(120), D(2), E(0) #2725135
統計: A(25), B(318), C(120), D(2), E(0) #2725135