Прочитайте приведенные ниже предложения. Преобразуйте слова в скобках так, чтобы они грамматически соответствовали содержанию предложений.
How long it usually (take) to get from Moscow to Vladivostok by train?
Mrs Robinson (be) a member of Greenpeace for ten years. She saves endangered animals.
If people (not, pour) dirty water into rivers and oceans, we will live in a better world.
You look tired. How long you (work) in the garden?
Alice (know) me since I was 15, but as a person, not as a writer.
Dinosaurs(become) extinct 65 million years ago.
If you want to have a pet, the first thing you should do (be) to think about how you will feed it.
1. does it usually take
2. has been
3. don't pour
4. have you been working
5. has known
6. became
7. is