______ the crisis of economy getting more and more serious, the government is searching for ways to improve people’s life.
Radar enables the pilot of an airliner to take off, fly and land in _____.
He's the kind of man who is fond of _____ compliments to other men's wives.
When a space shuttle has accomplished its _____, it can be ready for another trip in about two weeks.
People cannot but feel _____, for they simply cannot understand how he could have made such a stupid mistake.
What makes the space shuttle _____ is that it takes off like a rocket but lands like an airplane.