Помогите с английским, надо найти ошибки.

Question

Помогите с английским, надо найти ошибки.

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Answer 1

1. An active smoker usually looks older than his non-smoker friend.
2. Fast food is easy and convinient.
3. He is the most healthiest  in his class. He does exercise every day
4. Mike is more fitter than his friends.  
5. What is your height?You are taller than me.