I know the ________of the bird because it's one of the________ birds in the world.
A. importance; important
B. important; importance
C. importance; most important
D. important; important
---How long did it ________you to solve the problem?
---I _______about half an hour on it.
A. take; took B. spend; took
C. spend; cost D. take; spent
---Could you come back home at three o’clock？
---_________. I will have a meeting at half past two and it will last two hours.
A. Yes, I hope so. B. I think so.
C. I’m afraid not. D. I’m afraid so
--- We will build a subway(地铁) in Taizhou before 2015.
--- Wow, ________________!
A. what an exciting news
B. how excited the news is
C. what exciting news
D. how exciting news
--- Are you happy with your grades in the math exam?
---Not at all. I can’t have ________________.
A. a worse one B. a better one
C. the worst one D. the best one.
---What do you often do_______classes to relax yourselves?
---We often do eye exercises, listen to music or do some running around the school.
A. in B. among
C. between D. through
