35. Madison is one of the most walkable cities _____ its extremely clean air, low accident rate for pedestrians, tons of walking paths, and the huge number of athletic shoe sales.
(A) because
(B) since
(C) because of
(D) as a result
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統計: A(35), B(5), C(197), D(11), E(0) #2754289
統計: A(35), B(5), C(197), D(11), E(0) #2754289