1. She had three sons, and they were happy family.
(Is this a right sentence?)
2. One day she got a disease and stayed in bed. (Is it OK?)
3. What will you do 20 years later?
3-1. I will teach math at an academy.
3-2. I will be studying abroad.
3-3. I will start to do business.
3-4. I will be able to buy a new car.
(Are the answers all correct?)
All sound fine.
Everything looks correct. However, I would change #2 to say "One day she because ill and stayed in bed."
I think GuruBlue meant to write, "One day she became ill ... "
1. The sentence "She had three sons, and they were happy family" is not grammatically correct. Here's the correct version: "She had three sons, and they were a happy family." The correction involves adding an article before "happy family" to make it clear that they were a happy family.
To correct the grammar, you could say: "She had three sons, and they were a happy family."
2. The sentence "One day she got a disease and stayed in bed" is grammatically correct. However, it might be better to use a more specific disease instead of "a disease" to provide more clarity. For example, you could say "One day she got the flu and stayed in bed."
To make it more specific, you could say: "One day she got the flu and stayed in bed."
3. The answers provided for "What will you do 20 years later?" are all grammatically correct. However, it's important to note that the correct answer depends on the person answering the question and their future plans, so it is subjective.
To correct the answers, you could say:
3-1. "I will teach math at an academy."
3-2. "I will be studying abroad."
3-3. "I will start my own business."
3-4. "I will be able to buy a new car."