单选题 On hearing his cry, the thief took a ＿＿＿＿＿＿＿＿＿＿ from the windows and then escaped out of sight. 的答案

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题目内容：
On hearing his cry, the thief took a ＿＿＿＿＿＿＿＿＿＿ from the windows and then escaped out of sight.
题目选项
leap
leak
lead
lean

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