giúp mình vs ạ EX5: Chọn đáp án đúng 1. There was .............. piano in the corner of the room. A. a B. an C. .... D. the 2. It is fun to learn English on .............. computer. A. a B. an C. ..... D. the 3. Are they .................. students? A. a B. an C. .... D. the 4. Have you ever been to .............. British Museum. A. a B. an C. .... D. the 5. We only have .............. hour to complete the test. A. a B. an C. .... D. the 6. ............ Hyde Park is a very large park in central London. A. a B. an C. .... D. the 7. I would like .............. rice with my curry. A. a B. an C. .... D. the 8. He is ............ English man. A. a B. an C. .... D. the 9. He is ................ English. A. a B. an C. .... D. the 10. We may have ............ look at the magazines? A. ...... B. a C. the D. an 11. Children usually begin to go to ..... school at ..... age of 6. A. the, the B. a, a C. ......, the D. the, a 12. Finally we got to ....... house where our grandparents had once lived. A. the B. an C. ...... D. an 13. Sam is .............. man to speak at the conference tomorrow. A. ...... B. a C. the D. an 14. Birds can fly in .................. sky. A. an B. the C. ...... D. a 15. All work had to be done by ..... hand when there were no modern machines. A. an B. the C. ...... D. a 16. She is .............. tallest girl in the school. A. a B. an C. the D. ...... 17. Where is ............ pretty, pink sweater I bought last week? A. a B. an C. the D. ...... 18. I want to see .............. movie. I don't care which one we see. I just want to get out tonight. A. a B. an C. the D. ...... 19. Can you play .............. piano? A. a B. an C. the D. ...... 20. Do you like .............. my new glasses? A. a B. an C. the D. ......