根据句意及首字母提示写单词 1. Washing hands often is one of the best ways to p__________ the spread of H1N1 flu (H1N1型流感). 2. -Will Mr Wang come to our party? -I s__________ so. 3. Should students be allowed to use cell phones in school? The teacher organised a d__________ about it last week. 4. Too much work and too little sleep usually cause (引起) i__________. 5. When you are ill, please take the m__________ as the doctor tells you.