— How about the suggestion Prof. Smith put forward at the meeting last Friday? — The committee discussed it for hours without a decision _______. 

_______ with new challenges, he is always ready for them and never gives up.

There are many famous cultural relics in our country, many _______ thousands of years ago.

With exports     an important role in its economic growth now, this province has been affected by the global economic downturn.

Britain announced tighter security measures this week, with plans ______ full-body scanners at Heathrow airport within three weeks.