1. I will drink enough water.

2. I will dring water enough.
3. I will eat enough water.
----------------------------------
Are #1 and #2 correct grammatically?
What about #3? Can we use 'eat' instead of 'drink'? In a basic grammar test, can we use both #2 and #3?

Only #1 is correct.

Could you check this exercise, I had to complete the text. I wrote my answer with capital letters.

Thanks so much
When I first met Steve, our senior manager, he seemed to me rather PATIENLY and somewhat DECISIVE especially when it was necessary to take some serious decisions on the main project. However, the ideas he was able to come up with were truly IMPRESSIVE. He must be one of the most creative and probably UNUSUAL people I’ve never come across in my professional life. So it didn’t take me long to change my attitude. He was very good at INSPIRING the whole team and we successfully completed NUMEROUS projects together.

In this case, the correct sentence would be #1: "I will drink enough water." Let me explain why:

#1: "I will drink enough water."
This sentence is grammatically correct. "Drink" is the appropriate verb when referring to consuming water (or any liquid). We use "drink" to describe the action of taking in a liquid through the mouth.

#2: "I will dring water enough."
This sentence is not grammatically correct. The word "dring" is incorrect; it should be "drink." Additionally, the correct word order is "enough water," not "water enough." So the correct version of this sentence would be, "I will drink enough water."

#3: "I will eat enough water."
This sentence is not grammatically correct either. We do not use the word "eat" to refer to consuming water. "Eat" is generally used when referring to consuming solid food. In the case of water, we use the verb "drink."

In a basic grammar test, it is important to choose the correct verb for the specific action. So in this case, #1 would be the correct option.