The solution for exercise 3 in chapter 03 - Speaking of Cutting Edge Intermediate - Student's Book by Sarah Cunningham, Peter Moor and Jonathan Bygrave
Question
Look at the questions in exercise 2a again.
Answer
1
Excuse me
One more question
Can I ask you a question?
2
Do you know
Could you tell me
Difference
In questions 1-3, the subject and verb are inverted because they are direct questions.
In questions 4-9, the subject and verb are not inverted because they are indirect questions.