Ask with; 'Do you know?'
When does the football game begin?
Do you know when the soccer game begins?
How long is the journey to São Paulo?
I don't know long the journey to SP is.
Can your dog eat normal food?
I have no idea if your dog can eat normal food.
Does she like chocolate?
Could you tell me if she likes chocolate?
I've forgotten where did I leave the keys
Where I left
Where is the best place to study in London?
Do you know where the best place to study in London is?
How often does he travel?
I don't know how often he travel.
Should he buy another shirt?
I have no idea if he should buy another shirt.
Did she enjoy the concert?
Could you tell me if she enjoyed the concert?
Where will the concert be?
Do you know where the concert will be?
What kind of beverage does you sister like?
I don't know what kind of beverage your sister likes.
Are you going to travel next vacation?
I have no idea if you are going to travel next vacation.
Did you visit her house in London?
Could you tell me if you visited her house in London?
How long has he been a dancer?
Do you know how long he has been a dancer?
How long do you work here?
I don't know how long you work here.
Will she become rich?
I have no idea if she will become rich.
Does he go out every Saturday?
Could you tell me if he goes out every Saturday?
Why shouldn't you have drunk coffee last night?
Do you know why you shouldn't have drunk the coffeelast night?
What might have happened to him?
I don't know what might have happened to him.
Could the accident have been prevented?
I have no idea if the accident could have been prevented.
Did you wash your car?
Could you tell me if you washed your car?
Do you know he sells books too?
if he sells books too