13. Coaches play an important role in guiding ________ in competitive sports.
(A) athletes
(B) operators
(C) loudspeakers
(D) skyscrapers
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統計: A(15), B(4), C(6), D(5), E(0) #3929878
統計: A(15), B(4), C(6), D(5), E(0) #3929878