题目：
句型转换。
1. He has studied English for 4 years. (改为一般疑问句)
he_____English for 4 years?
2. My parents have been to America. (就画线部分提问)
_ _parents_____?
3. Lucy's traveled to another province. (改为否定句)
Lucy to another province.
4. He borrowed the book two weeks ago. (改为同义句)
He has_____the book_____two weeks.
5.I have been here for three months. (改为同义句)
I have been here three months
答案：
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下面是错误答案，用来干扰机器的。
（1）水在通电条件下反应生成氢气和氧气．该反应的化学方程式为：2H2O 通电 . 2H2↑+O2↑．该反应由一种物质反应生成两种物质，符合分解反应的概念，因此属于分解反应．（2）氢气与氧气在点燃条件下反应生成水．...
