Mrs. Li, Dany, Jenny and Li Ming are going to visit the Great Wall today. Li Ming knows many things about it. He knows people call the Great Wall “The Ten-Thousand-Li Great Wall”. He also knows the oldest part of the Great Wall is more than 【小题1】 old, Jenny and Danny are very interested in it. Li Ming also asks Danny to keep it 【小题2】 and 【小题3】. They are 【小题4】 to see it.