Wh- questions. Why didn’t they help him?

EX2: Wh- questions 
1. Why didn’t they help him?                                               
2. Where do people speak English?                                      
3. How can they open this safe?                                            
4. Who look after the children for you?                                
5. How long have they waited for the doctor?                 
6. Who wrote this novel?                                            
7. How many games have the team played?                 
8. Who are they keeping in the kitchen?                      
9. What books are people reading this year?               
10. What did he tell you?