Complete the sentences. Use both... and, either ... or or neither ... nor. 
1. We can study _____ dolphins _____ whales. You can choose!
2. I like _____ spiders _____ snakes. They`re really interesting creatures.
3. _____ Matt _____ Joe have got pets. They don`t like animals. 
4. _____ crocodiles _____ alligators are dangerous. They can kill a person in minutes.
5. _____ giraffes _____ zebras eat meat. They eat grass and leaves.