1. There was a tug-of-war on the playground. The teams drew at 2-2.
2. They did a tug-of-war in the playing field. The game ended in draw.
3. They played the tug-of war at the playground. Class 2-1 won the game at 3-2.
(Would you check the sentences? I need your corrections. Thank you.)
#1 is okay. #2 should read "ended in a draw" (or a "tie"). In #3, "the" is not necessary. Tug of war is tug of war.
My correction is as follows.
1. There was a tug-of-war on the playground. The teams drew at 2-2.
2. They did a tug-of-war in the playing field. The game ended in a draw.
3. They played tug-of-war at the playground. Class 2-1 won the game at 3-2.
All seem fine except the use of "did" in sentence 2.
The verb "held" or "had" would work better there.
1. The sentence "There was a tug-of-war on the playground. The teams drew at 2-2." is correct.
2. The sentence "They did a tug-of-war in the playing field. The game ended in draw." is correct, but it would be more natural to say "The game ended in a draw."
3. The sentence "They played the tug-of-war at the playground. Class 2-1 won the game at 3-2." is correct, but it would be more natural to say "The game ended with Class 2-1 winning 3-2." or "Class 2-1 emerged as winners with a score of 3-2 in the tug-of-war game at the playground."
Overall, the sentences are grammatically correct, but the suggested revisions would make them sound more natural and fluent.