You should remember that if you do not work hard, you will have a chance to fail in the exam. Work hard lest ……………….. .

There goes a proverb, "Grasp all, lose all" If you want to get everything at a time, you may end up in losing every thing.

The first and foremost duty of a student is to study. Without studying regularly/hard , you can never expect a good result.

You never speak the truth. I will not accompany you unless you speak the truth .

Early rising is good for health. You should rise early so that you can possess/have a good health

Self-help is the best help and Allah helps those who help themselves

Don't be tensed for my return. You can get in touch with me after I shall have finished my work.