17. Whenever the election is around the corner, one will be bombarded by candidates ______ insults with one another on controversial issues.
(A) changing
(B) trading
(C)peddling
(D) offering
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統計: A(0), B(0), C(2), D(0), E(0) #3443220
統計: A(0), B(0), C(2), D(0), E(0) #3443220