15. The government has been _______ in introducing public health measures to help reduce the number of people chewing betel nuts.
(A) distant
(B) foreign
(C) negative
(D) successful
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統計: A(3), B(1), C(5), D(21), E(0) #2810810
統計: A(3), B(1), C(5), D(21), E(0) #2810810