Pain is now considered the fifth _____sign, as important as blood pressure, temperature , breathing rate and pulse in determining a person’s health.
| A．original | B．vital | C．unique | D．vivid |
The astronauts found that ______ the spaceship went further and further into space, it became more and more difficult to control its own movements.
| A．if | B．till | C．as | D．while |
You shouldn’t talk until ________ to.
| A．asking | B．having asked | C．to ask | D．asked |
When I woke up, I found myself ______ in bed and ______ by doctors and nurses.
| A．lying; surrounding | B．laying; surrounded |
| C．lain; surrounding | D．lying; surrounded |
----- I’ ll give you a ring about eight.
------ Could you phone a bit later? I ______ dinner then.
| A．will be having | B．have had | C．had | D．was having |
It’s well-known that ________ World Exposition in 2010 is quite ________success
| A．不填; a | B．the; a | C．The; 不填 | D．不填; the |