1. He's ringing up _the police_.
   
   ⇒ **Who is he ringing up?**

2. Jack usually gets in _by climbing over the wall_ when he is late.
   
   ⇒ **How does Jack usually get in when he is late?**

3. This car belongs to _my grandfather_.
   
   ⇒ **Whose car is this?**

4. He earns _a hundred pounds_ per week.
   
   ⇒ **How much does he earn per week?**

5. I'm thinking about _joining a club_ to get more exercise.
   
   ⇒ **What are you thinking about doing to get more exercise?**