31. So serious ________ that even the best doctors failed to save his life.
| A．the man was injured | B．was the man injured |
| C．the man is injured | D．is the man injured |
In some parts of London, missing a bus means __________ for another hour.
| A．waiting | B．to wait | C．wait | D．to be waiting |
－Oh, it’s you, Steve! I ______ you.
－No surprising. I’ve just had my hair cut.
| A．don’t recognize | B．haven’t recognized |
| C．didn’t recognize | D．hadn’t recognized |
Agriculturalists are very popular with the farmers as they are________ agricultural science and technology.
| A．in great need of | B．in greatly need of |
| C．greatly need of | D．very much need of |
_____ is a fact that English is being accepted as an international language.
| A．There | B．This | C．That | D．It |
--Your effort is sure to pay __________
---Thank you for your encouragement.
| A．off | B．for | C．back | D．down |