1 . He is one of the most famous musicians in the world and he ________ (作曲) countless excellent works up to now.

2 . You as a teacher should try your best to find some e________ (有效的) ways to improve your classroom construction. （根据中英文提示填空）

3 . He knows little about American literature. No wonder your lecture was beyond his c______.(根据首字母单词拼写)

4 . A DNA test confirmed that the white giant panda is male and video clips from cameras showed its   ____________ (交流，互动) with other bears. (根据汉语提示单词拼写)

5 . The voices sounded really u_________(adj.独特的), some of which were so high that I was sure they could break glass! (根据中英文提示单词拼写)

6 . The _______ (喷发) of Mount Vesuvius in 79 AD destroyed the city--Pompeii, killing its inhabitants and burying it under tons of ash. (根据汉语提示单词拼写)

7 . By early May, _______ (紧急情况的) aid worth 9.7 million US dollars had been donated by China, with a further round to follow.（根据汉语提示单词拼写）

8 . It is significant to create homes for species that are endangered because of losing their own natural h________（栖息地）. （根据中英文提示填空）

9 . Texting, online messaging and live chats while playing video games all mean that they are c________ (持续不断地) producing written messages. （根据中英文提示填空）

10 . The possibilities were almost ______________ (无限的) .(根据汉语提示单词拼写)