Helping others is a habit, you can learn even at an early age.
---May I have a copy of Lu Xun’s short stories?---Certainly. ___.
To ___ with, he is too lazy.
He ___ me he was going abroad for further study, but he didn't ___ when he was leaving.
Having entered the classroom, the teacher ___ the book on the desk.
He is ill.He has ___ in bed for a week.