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4. How strange! These years my birthday always falls _____.

A. on the Sunday                                      B. on a Sunday

C. on Sunday                                            D. at a Sunday

5. This is _____ best kind of _____ pen you can get here.

A. the, the                                                B. the, a

C. the, 不填                                             D. a, the

6. As is known to us all, _____ tiger is in _____ danger of becoming extinct.

A. the, a                                                   B. the, 不填

C. a, 不填                                                D. 不填, the

7. He spent too much time talking on ______ phone while we were all busy at _____ work.

A. the, 不填                                             B. a, 不填

C. 不填, 不填                                         D. the, the

8. As _______ unemployment is very high at the moment, it’s very difficult for people to find _______ work.

A. the, 不填                                             B.不填，不填      

C. the, a                                                   D. an, the

9. Apartments in cities can be quite high. Renters are paying up to $1,000 per month for _______ bedroom apartment.

A. one a                                                   B. the one       C. one     D. a one

10. The education of ______ young is always ______ hot and serious topic.

A. 不填, 不填                                         B. the, a

C. 不填, the                                             D. the, 不填

11. I often have conversations with John over ______ telephone, while keep in touch with Tom by ______ letter.

A. 不填；the                                           B. 不填；a

C. the；不填                                            D. the; a

12. —John has put forward _______ most challenging question for us to answer.

—Yes, it really is. I have never heard _______ harder one.

A. the; 不填                                             B. 不填; the

C. the; the                                                D. a; a

13. “What about ______ school?” “It is as good, as anybody can see, _____ school as No 1 Middle School Attached to Hunan Normal University.”

A. a; the                                                   B. the; a

C. a; a                                                      D. the; the

14. The market for ______ used computers is getting larger and larger as______ years go on.

A. 不填, 不填                                         B. the, 不填

C. the, the                                                D. 不填, the

15. “Charley Oakley, ______ NBA All-star, hasn’t missed ______ game in the past three years.” “I can hardly believe it.”

A. an; the                                                 B. a; the

C. the; a                                                   D. an; a

16. In the market, vegetables are sold by _______ kilogram, I mean, by _______ weight.

A. the; 不填                                             B.不填; 不填

C. the; the                                                D.不填；the