Low-carbon lifestyle is of great benefit to improve the world environment.___________can be enjoyed from it until you have a deep understanding of it,however.
You cannot accept an opinion ______ to you unless it is based on facts.
The sunlight is white and blinding, ________ hardedged shadows on the ground.
________ with care, one tin will last for six weeks.
Every day ________ a proverb aloud several times until you have it memorized.
All flights ________ owing to the heavy fog, many passengers could do nothing but take trains.