Choose the correct relative

Fill in all the gaps, then press "Check" to check your answers.
Note that for some of these sentences there is more than one correct answer. That's life.

1. There is no doubt that many employees have worked for the same company for a number of years deserve a promotion.

2. The situation has reached the point the only solution is to introduce stricter regulations on advertising.

3. For example, a school teachers lack motivation is unlikely to produce excellent results.

4.There are people who think that they have no personal responsibility towards the environment, is one of the reasons why we are in this situation.

5. This is one of the reasons sport should be a compulsory subject up to the age of 12.

6. There are naturally occasions these rules should be relaxed to allow greater freedom.

7. The computer is perhaps the one invention has changed out lives the most.