Select the most appropriate option to fill in the blank and make a grammatically correct sentence.

Working together gave us a chance to __________ about old times.

reminisce

The most appropriate option to fill in the blank is reminisce.

The word "reminisce" means "to think about and talk about past events." In the context of the sentence, working together gave us a chance to reminisce about old times, meaning that we had the opportunity to talk about and remember past events.

The other options are not as appropriate.

• Reproduce means "to produce something again, usually in the same way as it was originally made." This does not make sense in the context of the sentence, because we are not trying to produce old times, we are trying to remember them.
• Recreate means "to create something new that is similar to something that already exists." This does not make sense in the context of the sentence, because we are not trying to create old times, we are trying to remember them.
• Reminding is the present participle of the verb "remind." This does not make sense in the context of the sentence, because we are not trying to remind each other about old times, we are trying to remember them.