Translation:How are you?
We usually say "καλά, εσύ;" (without και). Instead of "καλά", you may also use "μια χαρά" (pronounced: μñά χαρά, where ñ is pronounced as in Spanish), which literally means "a joy". Both are often used.
I think that "Πώς είσαι;" is less often used than "Τι κάνεις;" and has a slightly narrower meaning, implying that the person who asks wants to learn specifically about the other one's health. For example, when someone is ill and you want to know how he is, you ask "Πώς είσαι;", not "Τι κάνεις;"
The incubator shows the following in the drop down hints: How are you? How are you doing? What are you doing
Which I also see in the sentence above.
As you can see from the comments on this page this is the first time we have been informed that there were no hints. We will try to get to the bottom of this but it would help if you told us where you had this exercise.
Was it on the web, Android or iOS and which exercise it was in: Strengthen skills e.g?
How do you do. is a polite greeting that you can use when first introduced to someone. The reply would be "How do you do." Yes, exactly the same!
It is not a question at all and is only used the first time you meet someone.
It is very formal and not really used much anymore.
"How do you do?" is the standard greeting for the very first time and only that one time that you meet someone. You would never use it after that for that person. It does not ask how one is and does not receive a reply as to how someone is. The reply to "How do you do?" is "how do you do?" or "Happy to meet you."
These are old formal forms of greeting now nearly out of use. So, no "How do you do?" is not correct here.
Please note that this is the second time I am posting this. See the comment right above yours.
References: www.yourdictionary.com › Dictionary Definitions › how-do-you-do www.bbc.co.uk › Home › Grammar, Vocabulary & Pronunciation "How do you do?" vs "How are you?" - Common Mistakes and ... https://www.learnenglish.de/mistakes/howdoyoudovshowareyou.html etc,etc....
Please read my three comments on this page as to why "How do you do." is not used here. As a native Eng. speaker, half-century English teacher I have not used this expression 10 times in my whole life...and that was many years ago.
In addition, "How do you do?" is not enquiring about your health but is a fixed expression used the first time you meet someone...and then never again with that person.
I just checked "Hover" and I see at the top
"How are you?" and below that "How are you doing?"
Either of these are accepted as correct so there must have been some error in what you wrote.
We moderators cannot see your sentence therefore before you posted your comment here you should have made a REPORT.
Here's how to report.
Go to the bottom of the exercise page where you'll see REPORT Click on that:
Then choose what you want to REPORT: (You'll see these to choose from.)
-The audio does not sound correct.
-The dictionary hints on hover are wrong or missing.
-The Greek sentence is unnatural or has an error.
-The "Correct solution" is unnatural or has an error. -My answer should be accepted.
This is the one you should click on if your translation was not accepted.
After choosing the REPORT you want to make you should post on the comment page.
I ask because I am Brazilian and we have plenty of regional variations as well; 'how are you?' is 'como vai?', which literally means 'how do you go?' (in my region, 'como tais?', a short form of literal 'how are you?' is also used), but people also use 'tudo bom?' coloquially, which is kind of 'all is well?' - and it can be even said as part of a greeting, not really caring about the answer, when we say 'oi, tudo bom?' (hihowareyou?) when you like, meet someone in the street
"Τι κάνεις" is very often used.
"Τι κάνετε" is the plural form but also the formal/polite formal for one person or more than one.
See here for how to get the Greek keyboard and much more help
HOW TO GET THE GREEK KEYBOARD These links will not only show you how to get the Greek keyboard but also how to find the Greek letters on it, how to add accent, and more help.