Use the words in brackets to rewrite the predictions without changing

Use the words in brackets to rewrite the predictions without changing the meaning. 1. The Earth is sure not to disappear into a black hole. ( certainly)
2. Intelligent robots will probably take over most teaching jobs. ( likely)
3. There is unlikely to be a nuclear war. ( probably)
4. Its possible the world will be a better place. (might)
5. There is sure to be another terrorist attack. (definitely)