按要求完成句子。
1. he,to,the earth,back,came,( . )(连词成句)
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2. never,forget,I’ll,together,our time,( . )(连词成句)
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3. Did you go to a farm? (做出否定回答)
__________,I____________.
4. Lingling is writing a letter.(就划线部分提问)
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