Giải hộ mk vs ...............

`-` ĐTQH "why" luôn đứng sau reason (lí do) 

`-` ĐTQH "that" dùng để thay thế cho "who , which , whom" và không đứng sau dấu phẩy

`-` ĐTQH "which" dùng để thay thế cho danh từ chỉ vật , và cả mệnh đề

`-` ĐTQH "whose" dùng để thay thế cho tính từ sở hữu (S whose N)

`-` ĐTQH "who" thay thế cho danh từ chỉ người

`-` on which `=` when ; at which = where 

14. The professor whose course I am taking is excellent.

15. Mr. Smith whom I had come to see said he was too busy to speak to me.

16. I saw a lot of people and horses that went to market.

17. Tom has three sisters who are all married.

18. I recently went back to Paris that is still as beautiful as a pearl.

19. I recently went back to Paris where I was born nearly 50 years ago.

20. Do you know the music that is being played on the radio?

21. You didn’t tell us the reason why we have to cut down our daily expenses.

22. The day on which she left was rainy.

23 I’ve sent him two letters neither of which he has received.

24. That man whose name I don’t remember is an artist.