CHUYÊN ĐỀ: Ngữ pháp: mạo từ Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. 1. Question 6: In _______ rapidly changing world, adaptability is the key to success. A. an B. the C. Ø (no article) D. a 2. Question 6: In _______ heart of the city, you can find some of the best restaurants. A. an B. the C. Ø (no article) D. a 3. Question 6: _______ chef who prepared the meal received compliments for its exquisite taste. A. The B. A C. An D. Ø(no article) 4. Question 6: She bought _______ new car last week and she's already planning a road trip. A. Ø (no article) B. an C. the D. a 5. Question 6: _______ sunsets we see from our balcony are absolutely breathtaking. A. Ø (no article) B. An C. The D. A 6. Question 6: _______ coffee shop on the corner makes the best cappuccinos in town. A. Ø (no article) B. An C. The D. A 7. Question 6: In _______ near future, we might see significant advancements in technology. A. an B. the C. Ø (no article) D. a 8. Question 6: _______ marathon runner who finished first broke the previous record by five minutes. A. Ø (no article) B. An C. The D. A 9. Question 6: In _______ early morning, the streets are quiet. A. an B. the C. Ø (no article) D. a 10. Question 6: _______ apple pie recipe she uses has been passed down for generations in her family. A. Ø (no article) B. An C. The D. A 11. Question 6: In _______ new era, renewable energy sources are becoming more prominent. A. an B. the C. Ø (no article) D. a 12. Question 6: I have left my keys in _______ car, can you grab them for me? A. the B. a C. Ø (no article) D. an 13. Question 6: I left my umbrella in _______ office yesterday, could you check if it's still there? A. the B. a C. Ø (no article) D. an 14. Question 6: She found her lost earring in _______ living room behind the sofa. A. the B. a C. Ø (no article) D. an 15. Question 6: He left his phone in _______ bedroom, so he had to go back to get it. A. the B. a C. Ø (no article) D. an 16. Question 6: She left her bag in _______ café, and she's worried it might be gone when she returns. A. the B. a C. Ø (no article) D. an 17. Question 6: You are _______ most reliable friend I have ever had. A. Ø (no article) B. an C. a D. the 18.