Don't be tensed for my return. .......... after I shall have finished my work.

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

You ought to read your texts again and again with a view to understanding the concept clearly