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School fairs are very interesting. 
Usually they can be very useful. 
Sometimes I can take part in school fairs. 
Teachers can also make something for school fairs. 
We are happy, that we can buy something there. 
The last fair was in March. 
It was very good organized. Next fair is going to be the next week. I'm also going to take part in it. I think that you can join us.