17. Writing English is much more difficult to learn than _______ (口头) English.

15. Chinese is our mother t_________.　　 16. The country became _______ (独立) in 1948.

14. What is his __________ (本族) language?

13. Is Chinese one of the _________ (工作) languages of the United Nations?

12.　 The _________ (大多数)of the students did it right.

11．In what ________ (情形) do you use these words?

10. The plane ______ (飞) from Paris to Rome last night.

9.　 He has a ______ (广博的) knowledge of animals.

8.　 Please _____ (重复) what you said. I didn’t hear clearly.

7.　 Would you please _______ (发音)the words clearly and pay attention to the _______ (发音) of each word you learn.