1. Please be quiet. I'm working.
2. 'Where's John?' 'He's in the kitchen. He is cooking.
3. 'You are standing on my foot.' 'Oh, I'm sorry.'
4. Look! Somebody is swimming in the river.
5. We're here on holiday. We are staying at the Central Hotel.
6. 'Where's Sue?' 'She is having a shower.'
7. They are building a new hotel in the city centre at the moment.
8. I have to go now. Goodbye.