Which city has _________ population, Shanghai, HongKong or Qingdao? A. the smallest B. the most C. the largest
Teachers should _____ their students to practice _____ English as much as possible.
China takes the leading position _____ space industry.
I spend much money on books _____ I am not rich.
—What a nice classroom! —It _____ every day.
I don’t knowwith this problem.It’s too hard.