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中小學(xué)課件 Can you give more suggestions on keeping healthy? 1. We must have enough food to keep healthy. 2. We must have the right kinds of food. 3. We should have different food. 4. We shouldn’t eat too little or too much. 中小學(xué)課件 2 Complete the passage with the correct words. Some people think that smoking ________ ( must/can) help him relax. In fact, smoking is really __________ (healthy/unhealthy). Do you know that there ______ (is/are) over 4000 chemicals in cigarettes? These chemicals are _______ (good/bad) for our bodies. They _____ (must/can) cause cancer and other diseases. The smoke from cigarettes harms ____________ (only/ not only) smokers but also other people. It’s called “secondhand smoke” and it ______ (can/can’t) be more dangerous and has higher risks. Smokers shouldn’t use smoking to help them relax. They ______ (must/mustn’t) give up smoking as soon as possible. can unhealthy are bad can not