句型转换。
1. I was in Beijing last week. (就画线部分提问)
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2. They went there in July. (改为一般疑问句)
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3. She climbed the Tianshan Mountain. (改为一般现在时)
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4. There are pictures of China. (改为单数句)
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5. Lingling learnt English last year. (改为否定句)
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