It is true university is a once-in-a-lifetime opportunity to focus on academics, while having a diverse range of opportunities and activities at the same time. I am in complete agreement with this statement.
On the one hand, those who advocate students dedicating on their academics insist that this is the singular learning opportunity. An undergraduate is typically paying large sums of money, burdening themselves with student debt in most cases, in order to make the grade and become an expert in a given field. Freedom from a job allows them to invest fully in academics and learn the theories and skills that will form the basis of their entire professional career and put the knowledge gained into practice. As a result, there is hardly any value in diluting this opportunity by taking up more responsibilities.
On the other hand, outside activities are also an important element of higher education for several reasons. Firstly, the students themselves can develop and master vital soft skills required when they enter the labour market. For example, many students nowadays choose to work a part-time job related to their major. This grants them countless practical experience, which can be useful in their chosen professional career. Moreover, taking part in extracurricular activities will become an unforgettable memory later in their life. Even those who do not receive such tangible rewards from their extracurriculars can learn a lot. For instance, a student may opt to become involved in a local charity or a student initiative. These will all be formative experiences and may be more memorable and useful to the students than the subject they study. Given the job hopping frenzy of today’s world, many graduates choose to switch their career paths soon after university regardless, so the respective value of these other activities will increase as they look back on their college experience and recognise what was truly instrumental in their development.
In conclusion, it is preferable for university students to split their time between studying and involving in other activities since students not only gain knowledge from texbooks and lectures alone, but they also learn essential skills and have practical experiences. 
It is true university is a once-in-a-lifetime  
opportunity
 to focus on academics, while having a diverse range of  
opportunities
 and  
activities
 at the same time. I am in complete agreement with this statement.
On the one hand, those who advocate  
students
 dedicating on their academics insist that this is the singular learning  
opportunity
. An undergraduate is  
typically
 paying large sums of money, burdening themselves with  
student
 debt  
in most cases
, in order to  
make
 the grade and become an expert in a  
given
 field. Freedom from a job  
allows
 them to invest  
fully
 in academics and learn the theories and  
skills
 that will form the basis of their entire professional career and put the knowledge gained into practice.  
As a result
, there is hardly any value in diluting this  
opportunity
 by taking up more responsibilities. 
On the other hand
, outside  
activities
 are  
also
 an  
important
 element of higher education for several reasons.  
Firstly
, the  
students
 themselves can develop and master vital soft  
skills
 required when they enter the  
labour
 market.  
For example
,  
many
  students
 nowadays choose to work a part-time job related to their major. This grants them countless practical  
experience
, which can be useful in their chosen professional career.  
Moreover
, taking part in extracurricular  
activities
 will become an unforgettable memory later in their life. Even those who do not receive such tangible rewards from their extracurriculars can learn a lot.  
For instance
, a  
student
 may opt to become involved in a local charity or a  
student
 initiative. These will all be formative  
experiences
 and may be more memorable and useful to the  
students
 than the subject they study.  
Given
 the job hopping frenzy of  
today
’s world,  
many
 graduates choose to switch their career paths  
soon
 after university regardless,  
so
 the respective value of these other  
activities
 will increase as they look back on their college  
experience
 and  
recognise
 what was  
truly
 instrumental in their development. 
In conclusion
, it is preferable for university  
students
 to split their time between studying and involving in other  
activities
 since  
students
 not  
only
 gain knowledge from  
texbooks
 and lectures alone,  
but
 they  
also
 learn essential  
skills
 and have practical  
experiences
.