用所给词的正确形式填空。 1. In winter, it often _______. 2. This hotel is _______, we can find a clean one. 3. Don’t play soccer in the street. It’s _______. 4. I will go to the _______ to meet my parents. They will get here by plane. 5. We often have no classes _______ the weekend. dangerous, snow, dirty, during, airport