15. Digital life - 16. Amazing science - REVIEW 4 » Стр.96-(1)

Grammar 1. Complete the sentences. Use the correct form of the verbs. 1. Have you read this book yet? 2. When I switch off the lights, it is always very dark in here. 3. This table isn’t made of wood. 4. Look! The teacher just has arrived. 5. Breakfast is served every day between 7 and 10 a.m. 6. Don’t worry. I’ll remind her if she forgets. 7. I’m not hungry. I have already had lunch. 8. If you click ‘yes’, the film usually downloads quite quickly. 9. Unless he arrives soon, we will have to leave without him.