A. has taken B. has been taken

C. was taken D. took

【答案】B

【解析】试题分析：句意：---我们能坐在靠窗的桌子旁吗？---很抱歉，但它已经被占了。由句意可知，靠窗的桌子已经被占了，应该用现在完成时的被动式，故选B。

考点: 考查动词时态和语态的用法。