1. The old man who lives next door is my grandfather.

2. Natalie, who is a friend of Emma's, is very friendly.

3. We stayed at the Grand hotel which Ann recommended to us.

4. The trousers which I bought yesterday are too small for me.

5. John, whom I've known for a very long time, is one of my closest friends.

6. The man whom you were talking to is a computer expert.

7. The new stadium which can hold 90,000 people will be opened next month.

8. Alex, who is Greg's brother, plays the guitar well.

9. This morning I met Diana whom I hadn't seen for ages.

10. The postcard which came this morning was from Harriet.

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Xin hay nhất, tks!!

1. The old man who lives next door is my grandfather.
2. Natalie,who is a friend of Emma's,is very friendly.
3. We stayed at the Grand Hotel where An recommended to us.
4. The trousers which i bought yesterday are too small for me.
5. John,whom i've known for a very long time,is one my closest friends. 
6. The man whom you were talking to is a computer expert.
7. The new stadium which can hold 90,000 people will be opened next month.
8. Alex,who is Greg's brother,plays guitar well.
9. This morning i met Diana whom i hadn't seen for ages.
10. The postcard which came this morning was from Harriet.