1. Just remember to give it back in a week.

2. Just remember to turn it back in a week.

3. Just remember to return it in a week.

4. Just remember to bring it back in a week.
----------------------
Let's pretend a librarian said as in the above. Are they all possible?

#1 is less acceptable. To "give" implies no obligation. A gift is a gift, and borrowing a library book is not a gift, as returning it is not a gift. 2, 3, and 4 are fine.

Yes, all of the statements are possible and convey the same general meaning. However, there are slight differences in wording that could indicate a preference or emphasis on different aspects of returning the item:

1. "Just remember to give it back in a week." - This implies that the librarian is emphasizing the act of giving the item back within the specified timeframe.

2. "Just remember to turn it back in a week." - Using "turn it back in" instead of "give it back" might suggest that the librarian is referring to a specific location where the item should be returned, like a drop-off box or desk.

3. "Just remember to return it in a week." - This is a straightforward statement without any specific wording preferences. It indicates that the item should be returned within a week's time.

4. "Just remember to bring it back in a week." - This emphasizes the need for the person to physically bring the item back after a week.

Overall, while there are subtle differences, all of these statements convey the same basic message that the item should be returned within a week.