英语翻译Spring and fall are two ( )when many people catch a cold

英语翻译
Spring and fall are two ( )when many people catch a cold( ).Why can't the scientists find a cure fo the ( The answer is easy.There are( )of cold viruses out there.You never knwo which one you will( ),so there isn't a cure fo each one0 When avirus attacks your body,your body works( )to get rid of it.You feel terrible because you can't breathe( ),but your body is"eating"the birus.You get a ( ),but the heat of your body is killing the birus.You may ( )miserable,but your wonderful body is( )everything it can to kill the cold.
可选择的单词：feel,season,hundred,easy,hard,cold,fever,good,do,get.(用正确形式填空）