He sat at the desk, __________ a novel.
I know nothing about the young lady ________ she has just come back from Great Britain and got a doctor's degree.
She is ________ a growing number of Chinese people who are finding it increasingly difficult to find the time to read each day.
Some people do as they please ________ what the result will be.
Help others whenever you can________you will make the world a nicer place to live in.
You have failed two tests.You'd better start working harder, ________you won't pass the course.