=>
1. who
2. which
3. whose
4. which
5. who
6. which
7. which
8. who
9. which
10. Their garden, which is near here, looks beautiful.
11. Pam, whose children have gone to school, is not so buys.
12. C câu tường thuật, lùi thì
13. B câu tường thuật -> lùi thì
14. easier (adj-er than)
15. the most adj
-> so sánh nhất the most adj
16. quieter than (so sánh hơn be adj-er than)
17. more boring (so sánh hơn be more adj than)
18. hotter (much adj-er than)
19. more interesting than (more adj than)
20. the biggest (so sánh nhất the adj-est)