Conversationally it is possible, but it isn’t correct to do so
(unless you add an indefinite article:
Don’t you go to the theatre on a Saturday?)
I play football on Saturday.
I play football on Saturdays.
They mean practically the same, don’t they?
They are fine, aren’t they?
I play football on Saturday’ is not grammatically correct to indicate habitual action.
‘Saturday’ is singular but you are speaking of a number of Saturdays.
Hello Sunny…
Good Morning…
here i try to ask you questions…
Do you like to teach?
Do you answer me?
Do I wait for your answer?
Do all members read this post?
With Regards
Sunita
Welcome, Samasonnet.
It would be more natural to say:
Will you answer me?
Shall I wait for your answer? / Am I waiting for your answer?
Hello,Dear Team!
Do you read our each mail?
Do you have enough time for each(why not every) mail?
How do you spend your freetime(if you have)?
How do you find a motivation for teaching English?
Do you feel boring sometime during the reading our mails?
How do you know when someone makes progress in learning English language?
How do you explaine next fact that I listen English language all my life through the movies but I have a big problems with listening to English?
Do you think that’s enough question for now?
BE MUCH WELCOMED!
Zerade
Do you read our every mail?
(every = all; each = single)
You could say
Do you read each and every mail? (one and all)
Do you feel bored sometimes…
…progress in learning the English language?
How do you explain the fact that I have listened to the English language through movies all of my life but I still have a big problems listening to English? (this could be improved by using ‘a big problem understanding what is said.’)
Do you think those are enough questions for now?
‘Be much welcomed’ is incorrect.
Do you keep a pet?
Does she raise chickens?
Does he prefer a dog?
Do they eat eggs?
Do I do well at this post?
Did I do well with this post?
(Otherwise, you did very well!) 
do you be engish?
Are you English.
Hi!
Lesson 8
Do you need to know how to dance?
Does she go to buy you a present for your birthday?
Do I have to go on foot?
Do they have a house near the beach?
Does he love her?
Dear sir,
Here are some questions.
Do you like to eat?
Do you read English news letters?
Does he go to school?
Do I have work?
Does she go to supermarket?
Do you study English vocabulary?
best regards
Abebe
here are some questions
do you eat chocolate?
do you go to funfair every weekend?
does she have a red dress for the prom?
Every sentence needs to begin with a capital letter.
‘funfair’ needs an article.
Otherwise they are fine.
Good morning Sunny
Are these correct?
Do mothers love their children?
Does he speak English?
Does it cost much money?
Do you hear me?
Does this word mean something else?
Do they ignore her?
Does she work here?
right please?
Homeless
Yes, homeless, they’re fine. 
do you work on friday?
Sentences always require a capital letter to begin.
Do you work on Fridays? (Habitual - asking about usual working arramngements on any Friday)
Are you working on Friday? (asking about the single forthcoming Friday)