Respuesta :
Answer:
Hello!
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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 will get closer and closer.
5. The students must have a good understanding of grammar.
6. Anyone who hasn't done their grammar assignment must have had something better to do.
7. Studying can be exciting, rewarding and sometimes really annoying.
8. The only excuse there was, that their exam 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 any marks for the assignment.
Hope this helped you!
Explanation: For question 4 and 9 i couldn't find any errors.