读句子，选择正确的答语。 A. I live on the hill. B. They are playing hide-and-seek. C. It's a factory. D. It's next to（在……旁边）the zoo. E. Hi. 1．What are they doing? （________） 2．Where do you live? （________） 3．Where is your home? （________） 4．What’s this? （________） 5．Hi, Pingping. （________）
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