5. We cannot give you a______answer now;there are still many uncertainties about this issue.
(A)familiar
(B)courteous
(C)hollow
(D)definite
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統計: A(31), B(69), C(19), D(678), E(0) #1592215
統計: A(31), B(69), C(19), D(678), E(0) #1592215