3 When Tim witnessed the horrible traffic accident, he called 911 without _____ .
(A) hesitation
(B) obligation
(C) impression
(D) frustration
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統計: A(656), B(143), C(128), D(62), E(0) #3116935
統計: A(656), B(143), C(128), D(62), E(0) #3116935