The key to exercise solutions in chapter Unit 50 - Questions 2 for the textbook English Grammar in Use with authors Raymond Murphy from Cambridge University Press
Question
Put the words in the correct order.
Answer
I don’t know where Tom has gone.
How far is it to the airport?
I wonder how old Tom is.
When is Lisa going on holiday?
Could you tell me where the post office is?
I don't know whether anyone was injured in the accident.