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請找出下列句子中唯一的錯誤,并改正在后面的橫線上。
1. The children is playing football on the grass.  __________________
2. Listen! Who is read English loudly?  __________________
3. What are you doing?  You're writing a letter.  __________________
4. Sandy is siting under the tree.  __________________
5. My brothers are haveing lunch at home now.  __________________
1. is-are  2. read-reading  3. You're-I'm  4. siting-sitting  5. haveing-having
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