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Please correct the mistakes if there are any. The first few questions are related to usage. The answers were as follows: about the number of hours students use their smartphones a day, most of students replied that they used their phones an average of five to six hours a day.

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Please correct the mistakes if there are any.

The first few questions are related to usage. The answers were as follows: about the number of hours students use their smartphones a day, most of students replied that they used their smartphones an average of five to six hours a day.


or you could say "on average, most students used their smartphones from 5 to 6 hours a day"


I deleted a whole section because I could not see what it added to the information provided, that does not mean it is incorrect.  One of the tricks in English is only tell us stuff once and tell it simply and clearly.

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