1 `→` I went to see the doctor who had helped my father.

Doctor chỉ người nên dùng đại từ quan hệ who

2 `→` The woman who wanted my advice wrote to me

the woman chỉ người nên dùng đại từ quan hệ who

3 `→` Mary was wearing the red dress which was made in France

the red dress chri vật nên dùng which

4 `→` We stayed at Sofitel hotel ,which Mark recommended to us

Sofitel hotel là danh từ chỉ vật nên dùng đtqh which

5 `→` John is one of my closest friends , who I have known  for three years

my closest friends chỉ người nên dùng who và John xác định nên dùng mđqh không xác định

6 `→` New York is one of the largest cities in the USA , at which My sister is living.

the largest cities in the USA chỉ địa điểm nên dùng at which/where

7 `→` Ann talked to the man who won a lot of money

a man chỉ người nên dùng đtqh who

8` → ` The couple whose divorce was in the newspapers has got a married again

Chỉ sở hữu nên dùng whose

9 `→` He is the architect who designed the new city library

he chỉ người nên dùng who

10 `→ ` Jerry sent me the letter which was very funny.

the letter chỉ vật nên dùng đtqh who

1.I went to see a doctor who had helped my father

2 . The woman who wanted my advice wrote to me.

3 . Mary was wearing the red dress which was made in France

4 . We stayed at Sofitel hotel which Mark recommended to us

5 . John is one of my closet friends who I have known for three years

6 . New York is one of the largest cities in the USA where my sister is living

7 . Ann talked to the man who won a lot of money

8 . The couple whose divorce was in the newspaper has got a married again

9 . He is the architect who designed the new city library

10. Jerry sent me the letter which was very funny