Everybody congratulated the astronauts ____ their successful trip into space. 

The number of rare animals is decreasing ________rapidly that they are in danger of becoming extinct. 

The Boundary Waters Canoe Area Wilderness and Voyageurs National Park, both ___________ along the border between Minnesota and Ontario, Canada, are two of the most popular canoeing areas in North America.

Being he biggest expanse of brackish water in the world, the Baltic Sea is one of pecial interesting to scientists.

A professor of economy  and history at our university developed new theory of the relationship between historical events and finance crises .

In purchasing a winter coat, it is very  important for trying it on with heavy clothing neath.

The police officer lectured the children for ten minutes about the dangers to throw stones, but then them off with a warning.

Air pollution, together with littering are causing many problems our large, industrialy cities today.

………………..! Oh, dear. Didn’t you see that car coming? 

British people living outside the UK have to become accustomed to the image of Britain  appears to exist all throughout round the world

The composer Verdi has written the opera Aida to celebrate opening of  Suez Canal, the opera was not performed until 1871 .

The word “fragile” is closest in meaning to________

Many outdoor enthusiasts enjoy canoeing or kayaking _________ recreation on ponds, lakes, and rivers.

That the poverty action group was set up in the 1970s was a sign of public awareness during that decade.

Some birds can travel at speeds approaching one hundred miles an hour, and few land animals can so .

Wendy: "Would you like to have coffee, lemonade, or something different?" 

Cindy: "________________ ". 

The athlete has tried his best to ________ his SEA Games title and record. 

Pictures of the surface of the planet Venus was received yesterday from space probe “Explorer”, which was launched last year

The first vaccine ever developed was used to combat and fight a smallpox, disease resulting from infection by a virus.

The Irish potato famine of 1845 and 1848 were some of the worst in that country’s history led to thousands of deaths and mass emigration.

For many years, scientists studying the effects that the sun on human skin.