What can we do to save water?

1. We can turn off the water when we are not using it.
2. We can turn off the water when we are brushing teeth.
3. We can use only a little water when we wash face.
4. We can use a little water when we wash hair.
5. We can take a shower every two days, not every day.
6. We can take a shower with a little water.
7. We can use the river water instead of the city water.
8. We can reuse the water we use to wash face.
9. We can turn off the city water when we do the dishes with the water in the basin.
10. We can unuse a lot of water when we take a bath.
11. We can go to a public bath not to waste a lot of water in the bathroom at home.
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Would you check the sentences? Correct errors, please. Thank you.

1 is good.

2 is good.
3 is good
4 3 is better than 4
5 is good
6 would be better if you add "...ONLY a little..."
7 is good
8 would be better, since the subject WE is plural, make the rest of the sentence agree. "...we use to wash OUR FACES."
9. is good
10. is not good. Instead of "unuse," which is not an English word, write, "We can use less water..."
11 is okay, but awkward. It would be better to write "...public bath so as not..." or "...public bath to avoid using a lot of water..."

Sure, I'd be happy to help. Here are the corrected sentences:

1. We can turn off the water when we are not using it.
2. We can turn off the water while brushing our teeth.
3. We can use only a little water when washing our face.
4. We can use a small amount of water when washing our hair.
5. We can take showers every two days instead of daily.
6. We can take showers using less water.
7. We can use river water instead of city water (if it is safe and allowed).
8. We can reuse the water we use to wash our face.
9. We can turn off the city water while doing the dishes using the water in the basin.
10. We can save a lot of water by taking shorter baths.
11. We can use public baths to conserve water instead of using a lot in our home bathrooms.

Remember, these are just suggestions for saving water. It's important to adapt these actions to your personal circumstances and any regulations in your area.