14. Because there are still a number of uncertainties about this issue, we
regret not being able to give you a____________answer.
(A) respectful
(B) sympathetic
(C) definite
(D) vague
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統計: A(4), B(7), C(124), D(11), E(0) #3105462
統計: A(4), B(7), C(124), D(11), E(0) #3105462