选词并用适当形式填空

be  use   stay   cough  have catch  boil  keep  try   pass

    It's easy for people to cold in winter or spring．But we canalso do a lot  healthy．Here is some advice．Wash your hands often，and it will stop germs（细菌） from one person to another. Don't  your hands when coughing．Use a tissue（纸巾）、and then throw it away at once．Turn your head away from people near you when you （咳嗽） ．Get some fresh air．Germs like staying in wet and warm room．So you'd better your window open at night when you are sleeping，or you won'tenough fresh air．If flu（流感）is going around your house or school，you should   to stay away from those who  ill．Rememberyour towel（毛巾）for about a minute to kill germs．