Fill in the gaps with: fail, cheat, retake, supervise, revise.

1 I can’t go out this weekend because I need to ……………….. for my exams.
2 If Dennis doesn’t study hard enough he’ll ……………….. his science test.
3 Students are not allowed to ……………….. during an exam at school.
4 If you don’t get a good enough mark, you can always ……………….. the exam.
5 Teachers always ……………….. classes in the science labs.