–Do you know what Mike does all day? –I know he spends at least as much time watching TV as he _____ his lessons.
Most Australians actually don’t seem to do much sport. _____, Australia is generally considered to be a great sporting nation.
Professor Smith will come here to give a speech. All the preparations must be _____ before 5 o’clock.
---Is everything settled? ---Not yet. _____ I approached the problem, I couldn’t find a solution.
The retired professor, _____ in his new book in the past three years, hasn’t realized the decline in his health.
With the final exams coming, Mark, the top student in our class, is not worried about Chinese, and _________ English.