The key to exercise solutions in chapter 8d - Listening skills for the textbook On Screen B1+ - Student's Book with authors Virginia Evans and Jenny Dooley from Express Publishing
Question
Form subject / object questions to which the underlined words are the answers.
Listen and check, then repeat. Use rising intonation.
Answer
1) What did Chris book?; 2) Who likes skiing?; 3) What did Paul send Tom?; 4) Who went to Paris?