I am certain by no means ________ his word since he has promised an amount of money to the poor.
Most of the inhabitants (居民) can’t afford to buy houses of their own, because the price is rising __________.
__________ most efficient way to understand thousands of new words is to gain __________ good knowledge of basic word formation.
—Can you help me with the math problem, Dad? ___________. —OK, let me think it over.
— Oh, my God,I left my portable computer in the taxi! — ______. Let’s call the taxi company first.
---______ he managed to solve the problem? ---Oh,he turned to Professor Lee for advice.