===TITLE=== UNIT 6: GRAMMAR PRACTICE :: 20 QUESTIONS ===TIMER=== 20 ===PART=== 1. GRAMMAR :: 20 :: 1 ===SECTION=== Gerunds (V-ing) and To-Infinitives (to V) ===MCQ=== 1. He decided ______ his lifestyle to improve his health. A. changing *B. to change C. change D. to changing Giải thích: Động từ “decide” (quyết định) + to V (to-infinitive). ===MCQ=== 2. They enjoy ______ traditional games during family gatherings. *A. playing B. to play C. play D. to playing Giải thích: Động từ “enjoy” (thích thú) + V-ing (gerund). ===MCQ=== 3. She promised ______ her electronic devices less to focus on her studies. A. using B. to using C. use *D. to use Giải thích: Động từ “promise” (hứa hẹn) + to V. ===MCQ=== 4. We plan ______ our extended family during the holidays. A. visiting *B. to visit C. visit D. to visiting Giải thích: Động từ “plan” (lên kế hoạch) + to V. ===MCQ=== 5. He suggested ______ the traditional farming tools at the museum. A. to see *B. seeing C. see D. to seeing Giải thích: Động từ “suggest” (đề nghị/gợi ý) + V-ing. ===MCQ=== 6. My parents agreed ______ natural materials for the art project. A. using *B. to use C. use D. to using Giải thích: Động từ “agree” (đồng ý) + to V. ===MCQ=== 7. She enjoys ______ outdoor activities with her friends. *A. doing B. to do C. do D. to doing Giải thích: Động từ “enjoy” + V-ing. ===MCQ=== 8. They avoided ______ unhealthy eating habits. *A. developing B. to develop C. develop D. to developing Giải thích: Động từ “avoid” (tránh/né) + V-ing. ===MCQ=== 9. He promised ______ his parents when they get older. A. supporting *B. to support C. support D. to supporting Giải thích: Động từ “promise” + to V. ===MCQ=== 10. We decided ______ an opportunity to learn a new skill. *A. to take B. taking C. take D. to taking Giải thích: Động từ “decide” + to V. ===MCQ=== 11. She suggested ______ the school performance to a different date. A. to move *B. moving C. move D. to moving Giải thích: Động từ “suggest” + V-ing. ===MCQ=== 12. My brother agreed ______ more independent after moving out. A. becoming *B. to become C. become D. to becoming Giải thích: Động từ “agree” + to V. ===MCQ=== 13. They enjoy ______ about various cultures through traditional costumes. *A. learning B. to learn C. learn D. to learning Giải thích: Động từ “enjoy” + V-ing. ===MCQ=== 14. He avoided ______ a promise he couldn’t keep. *A. making B. to make C. make D. to making Giải thích: Động từ “avoid” + V-ing. ===MCQ=== 15. We plan ______ a healthy lifestyle to stay fit. A. adopting *B. to adopt C. adopt D. to adopting Giải thích: Động từ “plan” + to V. ===MCQ=== 16. She enjoys ______ by oil lamp in the evening. *A. reading B. to read C. read D. to reading Giải thích: Động từ “enjoy” + V-ing. ===MCQ=== 17. My parents decided ______ our old textbooks with new ones. A. replacing B. replace *C. to replace D. to replacing Giải thích: Động từ “decide” + to V. ===MCQ=== 18. He suggested ______ our learning style to improve grades. A. to changing B. to change C. change *D. changing Giải thích: Động từ “suggest” + V-ing. ===MCQ=== 19. We promised ______ the importance of family values. A. remembering *B. to remember C. remember D. to remembering Giải thích: Động từ “promise” + to V. ===MCQ=== 20. She agreed ______ the traditional game during the festival. A. playing B. play *C. to play D. to playing Giải thích: Động từ “agree” + to V. (Lưu ý: Đã sửa đáp án C từ “to play” thành lựa chọn duy nhất đúng và hợp logic).