10. She _____ for days, hoping to come up with the best answer to the difficult question.
(A) serrated
(B) tantalized
(C) undulated
(D) ruminated
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統計: A(14), B(15), C(9), D(72), E(0) #2909038
統計: A(14), B(15), C(9), D(72), E(0) #2909038