We live in the information era. Many people in the world have a 
, smartphone, and 
another electronic devicesReplace the adjective
another electronic device
other electronic devices
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 . Not only the world has changed
, Add the word(s)
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 people have changed 
. 
The contemporaryCorrect article usage
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   spend their time not only playing in the street
,Remove the comma
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  but and playing 
in Change preposition
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  . Some people believe that 
 can be useful and valuable for 
, 
othersCorrect word choice
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  believe that 
 has negative effects. We will discuss 
 aspect 
fromChange preposition
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  childrenChange noun form
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  lives in 
furtherCorrect article usage
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  part of 
essayAdd an article
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  and consider both views.
, we will analyze the first logical point of view. Supporters 
thisChange preposition
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  theory allege that 
  can serve 
in Change preposition
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 educational purposes. Some genres of 
, 
 as 
the Correct article usage
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 strategies or 
the Correct article usage
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 education, 
veryAdd a missing verb
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  helpful. The strategies can 
learnVerb problem
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  a child 
rulingChange the verb form
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  elaborate systems. 
, 
Correct article usage
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veryCorrect article usage
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  good series of 
 is called "Civilization", these 
 aboutAdd a missing verb
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  governanceAdd an article
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  of the whole country, it 
learnChange the verb form
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  Wrong verb form
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understandingWrong verb form
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  any political problems. The historical 
 help us 
learningWrong verb form
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  history and feel 
aCorrect article usage
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  spirit of that epoch. 
, 
gameAdd an article
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  inCorrect your spelling
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  called "Hearts of Iron 4". It is a complex game dedicated to the Second World War. Some educational 
 set a goal 
learningChange preposition
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  persons of something.
, the contrary opinion. Proponents 
thisChange preposition
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  position state that 
pastimeCorrect article usage
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  playingChange preposition
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  in Change preposition
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   exertCorrect subject-verb agreement
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  negative effects on 
the Correct article usage
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 . They spend their time in the fresh air less 
 youngsters become 
fewerCorrect quantifier usage
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  healthy than their 
ancestryReplace the word
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  formerly. The sedentary 
 causes some 
. 
 not all 
  develop 
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of Change preposition
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 Fix the agreement mistake
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brainsFix the agreement mistake
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 , some 
Correct pronoun usage
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ones Correct pronoun usage
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 can be harmful 
forChange the preposition
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  the nervous system. 
In conclusion, I have rather a positive attitude 
toChange preposition
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   , it is 
theCorrect article usage
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  great instrument for education. But we 
 restrain 
 from 
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 excessive overuse and 
motivatedWrong verb form
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  them to do sports.