Question

1. There were two seeds.
The first seed was negative, but the second seed was positive.

2. There were two seeds.
One seed was negative, but the other seed was positive.

3. There were two seeds.
The first seed was negative, but the other seed was positive.

4. There were two seeds.
One seed was negative, but the second seed was positive.

(Which expressions are corrct? And then, would you let me know the reason?)

Answer 1

Sentences 1 and 2 are correct because they are balanced. Do you see where the imbalance is in 3. and 4.?