Correct the mistakes in each of these sentences. 1.Many scientists believe it's impossible that one day we live on other

1. Many scientists believe it\'s impossible that one day we\'ll live on other planets.

2. This time tomorrow I\'ll be writing an email.

3. I don\'t believe that computers will ever be developed to be more intelligent than humans.

4. I\'ll have finished fixing this computer by the time my boss comes back.

5. In thirty years\' time, most people will use their TV as the screen for their computers.

6. By the time he finishes his computer course , he\'ll have spent over 500 dollars.