Choose what to eat is no longer as easy as it once was. Our eating habits  1.   

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Choose what to eat is no longer as easy as it once was. Our eating habits  1.       
have changed , as have our way of life. And the fuel we need for our      2.        
body is also different. Tradition diets often have too much fat and too     3.        
much calories for the 21^st-century person. If we want to keep up with the  4.       
high pace of modern life, we had better to learn to make the right choices  5.       
about what and how we eat. Because we have so much to choose, many    6.       
companies offer advice about what we should eat. It’s good if we spend our  7.      
time and money in buying food and keep a balanced diet. Instead of eating   8.     
expensive diet or going on unhealthy diets, we can simply try to eat little    9.    
sugar and take more exercise. I hope that everyone keeps a good health.    10.                                          

答案

1. Choose 改为 Choosing。
2. have 改为has。
3. Tradition 改为Traditional
4. much 改为many。
5. better 后面的to去掉。
6. choose 后面加from
7. 正确
8. keep 改为keeping。
9. little改为 less。
10. a去掉。

解析

1. 动名词作主语
2. 倒装句中助动词取决于后面的主语
3. 应该是形容词
4. calories 是calorie （卡路里）的复数
5. had better do sth 最好做某事
6. 必须加from
7. 正确
8. keeping 和前面的buying构成介词in的宾语
9. less 和后面的more构成对应关系
10. health 是不可数， keep good health 保持身体健康