If you _____ your promise, the results will be sure to satisfy you.

Is it Jim who is driving the new car ——-Probably I know he has recently boughta ______car

Not everyone has realized what_______important part the balance of________ nature plays in their life.

____when has the country been open to international trade?—1978,I suppose

Tom is a stubborn and careful man; It took many hours to_______ him of my good idea and to give up his.