The writer conveyed a positive attitude through his works.______, his readers are motivated and are themselves becoming a source of motivation for others.
The government will take some effective measures to control the heavy smog_____the northern China.
She cared more about her students than her own health. That’s why two years passed _____ she was treated for breast cancer.
The early pioneers had to many hardships to settle on the new land.
He tried to join the army but was _____ because of poor health, which made him depressed.
The course normally attracts 20 students per year, ____ up to half will be from overseas.