10. Amazon strongly dominates in the UK, _____ it accounts for about 30% of online retail sales.
(A) which
(B) where
(C) what
(D) why
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統計: A(12), B(17), C(1), D(0), E(0) #4017208
統計: A(12), B(17), C(1), D(0), E(0) #4017208