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college is mandatory to (for) successful career,
which is helps (which helps) them to acquire real time experience
one of my friend(s)
after working there (for) 3-4 years, now he is promoted to assistant level job which helps him to (become) stable financially
After completing their higher education, they can get equally paid job (needs more explanation, to establish cohesion)
one of my colleague(s)
band: 4/6
