1. He caught a big fish, but he put it back.

Question

2. He caught a big fish, but he turn it back.
3. He caught a big fish, but he returned it.
4. He caught a big fish, but he returned it back.
5. He caught a big fish, but he released it.
6. He caught a big fish, but he released it back.
[Can we use all the expressions? Are they all the same in meaning? Which expressions are not acceptable?

Answer 1

#5 is the only correct expression.

#s 1 and 3 are close, but not quite right.

All the others are incorrect.