Generally, _____ to a university in western countries, international students need to prove their ability to speak English.

the word PM 2.5 ________ appearing in media reports, people pay greater attention to it and seek health tips for smoggy days.

－Wheredid you go _____ the morning of April 6－Ididn’t come to the office _____ the meeting was over.

6To our delight, the whole situation is ___________ our control and we have a good chance of winning the competition

We are not prepared to compromise _____ theprice of the computer