44. Emily Chang has consistently earned high grades _____ she enrolled in the honors program two years ago.
(A) unless
(B) if
(C) since
(D) during
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統計: A(3), B(0), C(37), D(1), E(0) #3446522
統計: A(3), B(0), C(37), D(1), E(0) #3446522