Tiếng Anh 7 cần gấp 2

12. The old building... .is in front of my house fell down. A. of which B. which C. whose D. whom 13. Her computer .was my friend's got broke. A. which B. whom C. who D. that 14. Her grandmother, .. .is 70, often takes exercise. A. what B. who C. where D. which 15. The really happy peo ...