Hi Luis! I honestly think the sentences you have are fine! If I were going to make any changes, they’d all be small and based on my own personal preference. I don’t think any changes are really necessary—good job! Take your original sentence for example: “I made plenty of food for my guests, but none of them liked it. I will try a different menu next time.” I would personally say something like: “I made plenty of food for my guests, but none of them liked it—I guess I’ll try out a different menu next time and see if I get a better result.” One other sentence for example: “After walking 20 minutes in the heat to the office, I hoped to get some water from the water cooler, but there wasn't any.” Here, I would just get rid of the word “water” in “water cooler,” and say “cooler.” So: “After walking 20 minutes in the heat to the office, I hoped to get some water from the cooler, but there wasn't any.” Another alternative could be: “After walking 20 minutes in the heat to the office, I hoped to grab some water from the cooler, but there wasn't any.” Other teachers and I could go on making small changes to all of your sentences, but unless you really want to see a bunch of different variations, I don’t think any changes are necessary.

Great stuff! Some might argue it should be I had hoped to get some water, to emphasise the point. I think minizoo should be two words -> where the mini zoo was