關於Undertaking的意思和用法的提問

A: “Teaching a class full of kids was bigger undertaking than anticipated!”

A: × Undertaking multiple jobs in Students Union, I am an active participant in various extra-curricular activities, which provides valuable opportunities for me to improve my skills in terms of organizing, communicating, leadership, and problem-solving.
✓ I undertake multiple jobs in my Student Union and actively participate in various extra-curricular activities. This provides valuable opportunities for me to improve my skills in organising, communicating, leadership, and problem-solving.

× And I believe this resilience and versatility also make a distinctive feature of me, which can help me to aim higher and climb higher in my future pursuit at your prestigious university.
✓ I believe this resilience and versatility are distinctive features of mine and would help me to aim and climb higher in future pursuits at your prestigious university.

Made some grammatical and sentence structure changes.

Also "organizing" is the American spelling, in the UK it is "organising" so use whichever is correct for the country you are writing to.

Good luck with your application :)