I urgently need you to revise these sentences. Thank you.

1) You can cheat by conceiling pieces of paper full of information in your pencil case.
2) you can take a picture of your exam questions and email it to a friend
2) you can instant message homework questions or text them to a friend
4) Students are involved in sports activities or have afternoon classes and don't have time to revise before tests. So they often cheat to get better grades.

1 answer

1. ... concealing ...

2. Capital letters and end punctuation are needed.

4. The word "revise" means to do something over again with changes so that it reads better. I don't think that's the word you want here. I think you need the verb "to review" or "to study."