The key answer of exercise 2

a)

1. Where did Bob go on holiday?
2. How did he travel?
3. When did he go?
4. Who did he go with?
5. What did they do on holiday?
6. Why were they home late?

b)

1. He went to Thailand.
2. He travelled by plane.
3. He went in July.
4. He went with his family. / He went with his wife and children. / He went with Nina and the children.
5. The children played and Bob and his wife did a lot of reading.
6. Because there were problems with the plane.