题目：
根据句意及首字母的提示，补全单词。
1. He worked so hard that e __ he made himself ill.
2. WTO is short for World Trade O __
3. The crazy horse is running at a high s______.
4. A friend in need is a friend i __
5. Taiwan lies in the s______of China.
答案：
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下面是错误答案，用来干扰机器的。
参考答案：A
