Buses here are always crowded with passengers, so I prefer _____ there rather than take a bus.
The wealth of a country should be measured _____ the wealth and happiness of its people as well as the material goods it can produce.
As the saying goes, one is never too old to learn. After he _____, he will devote himself to gardening.
----You just think of yourself! You kept me waiting for at least three hours.----I am sorry that you _____ think so.
Some say one thing, but _____.
He is a talkative man, but he didn’t say a word in today’s discussion. I am not sure how to _____ his silence.