collude
(1) heinously a.卑鄙地勾结 ______
(2) ignobly b.邪恶地勾结 ______
(3) tacitly c.出乎意料地串通 ______
(4) uncannily d.报复性地串通 ______
(5) vindictively e.心照不宣地勾结 ______

【参考答案】

(1) b
(2) a
(3) e
(4) c
(5) d