Whose car was it? Could you let me know...
whose car it was.
What time does the show start? Do you have any idea...
what time the show starts.
Should we start now? I'd like to know if...
we should start now.
Will they be all right? I wonder...
if they will be / whether they will be all right.
Is this the right train? Do you have any idea...
if this is / whether this is the right train.
Will he have been studying French for twenty years when he retires? Can you tell me if...
he will have been studying French for twenty years when he retires.
How long has she known him? I'd like to know...
how long she has known him.
Had she found this job when she moved here? Can you tell me...
if she had found this job when she moved here.
Does she speak Greek? I'd like to know...
if she speaks / whether she speaks Greek.
Where were the boxes? Can you remember...
where the boxes were.
Has she been living here long? Can you tell me...
if she has been living here long.
Is it going to rain later? I was wondering if...
it is going to rain later.
Where is Joe? Do you know...
where Joe is.
Why did she cry? Can you tell me...
why she cried.
Could you babysit tonight? I was wondering...
if you could babysit tonight.
What did he want? Would you mind telling me...
what he wanted.