Find the error in the following sentences:  1. Because fragments make it hard to understand your sentence 

2. Proofreading your writing can be very interesting you can find out what you have written. 3. While procrastinating and worrying, the exam came closer and closer.

 4. The essay had to be handed in to the lecturer that had to be a certain length.

 5. Students has to have a good understanding of grammar. 

6. Anyone who has not done their grammar assignment must have had something better to do. 

7. Studying can be exciting, rewarding and sometimes really annoyed. 

8. The only excuse their was , was that there exam had started early.

 9. When you use an apostrophe, make sure you know its proper use. Its often used incorrectly. 

10. The student didn't get no marks for the assignment.