. Although I liked the appearance of the house, what really made me decide to buy it was the beautiful _______ from the window.

It is well known that Madam Curie won two Nobel Prizes for her scientific ______.

When I spent my holidays in Europe, I bought _______ vases.

一Tell us, Mark ,what is the ____ of the American Civil War?一 Well, is it because the black slaves wanted freedom?

After our government launched a (n)       to popularize Chinese language worldwide, lots of Confucius colleges have appeared in foreign universities.