按要求改写句子。1. This is a taxi. (改为否定句)
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2. Is this a truck? Is this a bus? (改写为选择疑问句)
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3. It's Danny's car. (改为一般疑问句)
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试题答案
1. This isn't a taxi.
2. Is this a truck or a bus?
3. Is it Danny's car?