—Our teachers and parents always warn us not to smoke.—Yes, actually, the risk of heart disease is a powerful argument ____ smoking.
The problem ________ at the meeting yesterday.
________from his looks, he is a kind man.
Ladies and gentlemen, please fasten your seat belts. The plane _____.
The teacher spoke very slowly ____the students could understand everything he was saying.
These shoes look very good. I wonder _______.