如图，△ABC中，D为BC上一点，△ABD的周长为12cm，DE是线段AC的垂直平分线，AE＝5cm，则△ABC的周长是（　　　）

短文改错

文中共有10处语言错误，每句中最多两处。错误涉及一个单词的增加、删除或修改。

增加：在此处加一个漏字符号（∧），并在其下面写出修改的词。

删除：把多余的词用斜线（＼）划掉。

修改：在错的词下划一横线，并在其下面写出修改后的词。

注意：1. 每处错误及其修改均仅限一词；2. 只允许修改10处，多者（从十一处起）不计分。

    My dentist had just pulled out one of my tooth and had told me to rest for while. My mouth was full with cotton wool. He knew I collected bird eggs and asks me whether my collection was growing. He then asked me a lot of other question. In answer to these questions, I could neither nod nor make strange noises. Meanwhile, my tongue was busy search out the hole where the tooth had been. I suddenly felt very worried, so couldn't say everything. When the dentist at last removed the cotton wool, I was able to tell him of that he had pulled out the wrong tooth.

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