1.what are on display at the fair? where are Various products on display ?
2.who send many letters and postcards every day?
what do you send every day?
3.who keeps his books in a cabinet? what is Wang Ping keeps in a cabinet?
where is Wang Ping keeps his books ?
4.what takes place in Guangzhou twice a year? where is your Export Fair takes place in twice a year ? how often does your Export Fair take place in Guangzhou?
5.how many samples on the desk? what are on the desk?
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