The more _________ we take the safety standards, the further we can speed up the development of the school bus industry.
A 31-year-old woman was still________when rescuers carried her out and said "Thank you" to the people around her.
—People say your little brother has been admitted into QinghuaUniversity.—Yes. Never ________ he could achieve so much success.
________ reducing pullution, man should pay more attention to conserving energy.
I enjoyed very much the three years ______ it had taken me to study English at school.
Being examined twice a year, whether it is a car or a bus or a truck, is the rule that every driver _____ obey in this city.