Once ___ light, the film will be damaged and get useless.
Thanks to the Party’s opening and reform policy, people in China are ______ than they were thirty years ago.
If you hurry up, I think it quite ______that you will catch the flight to Hong Kong. There are 40 minutes left.
All______ to the earthquake-hit areas were cut off, which made the rescue much more difficult.
David woke up one morning to find both water and electricity _______ because he hadn't paid the bills.
Yuan Longping is such a(n) ______ scientist that he has been praised and rewarded many times.