Ответы
3 Fill in: excavate, clone, roam, reactivate, and revive, in the correct form.
1 Scientists believe they will be able to revive extinct animals in the future.
2 Archaeologists are very careful when they excavate artifacts from a site.
3 Some scientists hope that they can reactivate dinosaur DNA.
4 Dinosaurs roamed the Earth over 65 million years ago.
5 Scientists have already cloned one sheep from another.
Grammar
Use the prompts and the verbs in brackets to complete the sentences with the
past modals.
1 There's no orange juice left! Someone (must have drunk) it. (I am sure it happened)
2 Senim is on holiday in France. You (can't have seen) her on the bus this morning! (I am sure it didn't happen)
3 Ulan has a new jacket. He (might have got) it for his birthday. (I am not sure)
4 Jennifer went on a 50 km hike at the weekend. It (must have been) difficult. (I am sure it happened)
5 I can't find my hat. I (might have left) it in the car. (I am not sure)