15. When our country was battling to overcome this disaster, an outbreak of cholera further _____ an already grim situation.
(A) arraigned
(B) aggravated
(C) arrogated
(D) abrogated
(E) assassinated
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統計: A(0), B(100), C(7), D(7), E(1) #2349760
統計: A(0), B(100), C(7), D(7), E(1) #2349760