[單字] 請教一題單字

[aphroditeyeh (新的開始)]

They _______ and blockaded Visoko, where Canadians (peacekeepers) were posted.
(A)bantered   (B)avered   (C)shelled  (D)striated  (E)substantiated
答案是C
請問該怎麼翻譯呢
謝謝您

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