If your parents are not too bad-tempered, they will treat this failure with encouragement. You should have the courage to accept the lessons brought by this failure, so as to encourage you to study hard and show your parents good results in the next exam.

If you really can't communicate with your parents, you can choose to deceive yourself, such as asking your classmates to sign your name or imitating your parents' handwriting.

Finally, I wish you good grades in the next exam. Come on!