9 Underline

Here are the answers: 1. Have you read the book about Lisbon? 2. Flight 201 hasn't arrived yet/already. 3. John has been here for weeks. 4. We have Science lessons. 5. Melanie went to a concert. 6. A: Have you eaten? B: Yes, I have. 7. Peter has been since he was young. 8. This is the best book I've never read.