Revising your writings : correct the mistakes in bold

1. I have a high level of spoken English due to I spent a year in the UK.

2. I would like to apply for the job of security guard. 

3. If you want more information, do not hesitate to contact me.

4. I have the necessary preparation for the job. 

5. I have extensive experience facing the public. 

6. I have done all kind of different tasks. 

7. I enrolled university.

8. The job has provided me relevant experience required.