___________in the study lost in thought for a long time, I suddenly realized that nothing in the world remains __________.
A. Having sit; unchanged B. To sit; unchanging
C. Sitting; unchanged D. Sitting; unchanging
In the thrilling activity of bungee jumping, ________most matters is courage rather than strength.
A. it B. that C. as D. what
Mary felt ______from the outside world, since she lacked an Internet connection and couldn’t receive any e-mail.
A. cut down B. cut in C. cut off D. cut out
—Do you ______ the idea of living a low-carbon life?
—It sounds tough, but it is a tendency.
A. adjust to B. apply to C. approve to D. subscribe to
— When shall we go planting trees in the hill?
—______ it begins to rain, so they don’t need watering.
A. Not until B. While C. Till D. Unless
World Expo 2010 Shanghai China, a grand-scale global event, has ______ the significant theme “Better City, Better Life.”
A. abandoned B. adopted C. advocated D. adapted
