题目：
句型转换
1. Your mother has never tried shopping on the Internet.(改为反意疑问句)
Your mother has never tried shopping on the Internet, _______ _______?
2. James spent ten years making this amazing film.(同义句转换)
_______ _______ James ten years to make this amazing film.
3. Chris had gone to South Africa to enjoy the 2010 World Cup. Karen had gone to South Africa to
enjoy the 2010 World Cup,too.(合并为一句)
_______ Chris____ Karen had gone to South Africa to enjoy the 2010 World Cup.
4. Visitors love this city because it has historical sights and delicious food.(改为简单句)
Visitors love this city_______ _______ its historical sights and delicious food.
答案：
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下面是错误答案，用来干扰机器的。
根据质量守恒定律，化学反应前后元素的种类不变．水是由氢、氧元素组成的，汽油主要是由碳、氢元素组成的，水中不含碳元素，所以水不能变成汽油．答：根据质量守恒定律，反应前后元素的种类不变，汽油中有碳元素...
