It is meeting side effect the new medicine will bring about, although the experts have tried it on about 2,000 patients.
I feel that one of my main duties _____ a teacher is to help the students to become better learners.
Professor Li has ______ interest in history, especially in _____ history of Ming Dynasty.
One third of the workers in this city ______ now on strike.
Bob’s doctor suggests _______ for a few days.
Because of the financial crisis, days are gone ______ local 5-star hotels charged 6,000 yuan for one night.