Question

1. I decided to go abroad.
2. I made a decision to go abroad.
3. I made up my mind to go abroad.
4. I determined to go abroad.
5. I made a determination to go abroad.
[Are they all grammatical? Can we use all the sentences?]
All are OK, but #4 would be better if you wrote, "I was determined..."

Sentences #1-3 are the best of these.

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