What are the answers to the English grammar exercises?

Here are the answers: 1. Why does his sister wear warm clothes in summer? 2. How often does Boris go to the stadium to play cricket? 3. Does she like to eat biscuits? 4. What does Janet usually do on Saturday? 5. With whom do you usually have supper? 6. Does Nina often listen to records? 7. When does Jack usually come from work? 8. Does your little sister like to ask questions? Continuing with exercise 41: 1. With whom do you like to dance? 2. How well does your father drive a car? 3. Does Helen like to swim in the sea? 4. Which of your friends lives in Paris? 5. Do you like to work in the garden? 6. Where does Nick go to play baseball? 7. How often do they eat apples? 8. Do you take a cold or warm shower every evening? 9. Do they often play snowballs in winter? 10. Why does Simon not like to read detective stories? If you need further clarification, let me know!