阅读下面材料，在空白处填入适当的内容(1个单词）或括号内单词的正确形式，并填在答题卡的相应位置。
Since I was a baby，I   （have） a breathing problem. When the trees are letting their seeds fly on the wind，I'm really in trouble！I sneeze all day and can  （hard）breathe all night. And forget about  （visit ) any-one who has a dog or a eat in their house！The hair makes me cough.I’ll even start choking if I’m close to bird feathers.The only animal I can be around    having a reaction is fish.At least when I was growing up，I wasn't alone-my twin sister also had allergy problems when we were young. Her syndrome was so bad that she had to go to      specialized hospital many times. The doctors would hook  up to a machine that helped her breathe.When she was 5 years old，a successful operation was carried out    (fix）her problem-lucky her！The doctors thought I would grow out of my problem. I'm 17 now，    it still hasn't happened！In spite of this，there are many children  have allergies worse than me. So，the bright side of having allergies  （be）that I can understand other people much better.