Could you help me?

In the following numbered sentences, which is/are OK?

Mary and John are talking. (John likes vegetables except for a green pepper. One day, he hid green peppers in his closet and bought some cabbages.)

Mary: Yesterday, I found that green peppers all had gone. Strangely enough, they had turned into cabbages. Why? I’m 100percent sure I put them in the fridge!

John: That is a very scary case, and it will be a cold case.

Mary: Yes. But I found them in your closet, yesterday. Do you know why the green peppers had to be there, and why the cabbages had to be in the fridge?

John: Actually, yesterday’s paper said that cabbages were sensitive to heat. So, I thought that they should be in the fridge. Yesterday, there were no room in the fridge for them. In fact, the paper also said that green peppers hated a cold and liked a dark place.

Mary:
1. I don’t know where the cabbages should have been, but I’m sure where the green peppers should yesterday.
2. I don’t know where the cabbages should have been, but I’m sure where the green peppers should have yesterday.
3. I don’t know where the cabbages should have been, but I’m sure where the green peppers should have been yesterday.

It is in the fridge!

Thank you.