Questions in English: Wh question + auxiliary + subject + verb

Although this is basic grammar, many learners find a lot of trouble in asking questions correctly. So let's review their structure.

(Wh question) + Auxiliary verb + Subject + Verb = (WH) + A + S + V

To ask questions in English, we have to bring the auxiliary verb before the subject:
You are talking . Are you talking ? ( ASV : auxiliary + subject + verb)
He has arrived . Has he arrived? ( ASV )
It'll be there . Will it be there ? ( ASV )

Present and past simple don't use auxiliary verbs in affirmative sentences, but use do and don't in negative sentences and questions.
I work hard. Do you work hard? (ASV)
She called. Did she call? (ASV)

If we add a WH -question before, the ASV order will remain the same.
We are eating burgers. What are you eating? (Wh + ASV)
We went there. Where did you go? (Wh + ASV)
I told Sally. Who did you tell? (Wh + ASV)

Exercise. Turn the following sentences into questions:

I know the answer.    ____________________ the answer?
I lived in London .     Where ____________________?
You are kidding me.    ____________________ me? 
We are going for dinner.     Where ____________________ for dinner?
I got the job in 2010.         When ____________________ the job?
Mary will travel by plane .     How ____________________?
He can't speak Japanese.    ____________________ Japanese?
You can get there by bus.     How ____________________ there?
Johnny eats too much.     Why ____________________ so much?
You should listen to her.    ____________________ to her?
They are arriving in 5 minutes .     When ____________________?
We're talking about the match.     What ____________________ about?
He has invited a few friends.         Who ____________________?
I would like another cup of coffee.    What ____________________?