19. The government has ______ an investigation into the murder in which three people were killed. They will look into every clue they have found.
(A) contended
(B) concluded
(C) conducted
(D) confirmed
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統計: A(0), B(0), C(11), D(0), E(0) #3374962
統計: A(0), B(0), C(11), D(0), E(0) #3374962