Will you come tomorrow?
Do you think you'll come tomorrow?
Someone is laughing. You want to know what made them laugh.
What are you laughing at?
Do you think England will win?
Will England win?
I was wondering if could you come to the party.
Incorrect.
I was wondering if you could come to the party.
Laugh/what/you/makes?
What makes you laugh?
Where are you going?
Can I ask where you're going?
Someone is waiting for someone. You want to know for whom.
Who are you waiting for?
Could you tell me how I can get there?
How can I get there?
What are you talking about?
Correct.
Win/will/the/cup/you/who/think/do?
Who do you think will win the cup?
Which of these nationalities finds silences awkward?
Do you know which of these nationalities finds silences awkward?
You don't understand what someone is saying (the contents of their speech). You ask them.
What are you talking about?
I was wondering if you could help me.
Could you help me?
Do you know where does he work?
Incorrect.
Do you know where he works?
What/favourite/film/about/your/is?
What's your favourite film about?
Is it appropriate to dominate the conversation?
Do you think it is appropriate to dominate the conversation?
There is a great film. You want to find out about the story.
What is it about?
Do you know when the film starts?
When does the film start?
Who did say that?
Incorrect.
Who said that?
You/tell/me/could/where/park/the/is?
Could you tell me where the park is?
How much do you earn?
May I ask how much you earn?
Someone is telling you about the great party. You want to know who is coming with them.
Who are you going/coming with?
I'd like to know what I can do to improve.
What can I do to improve?
What are you looking at?
Correct.
What/at/you/laughing/are?
What are you laughing at?