1. This necklace belonged to my mother-in-law.

⇒ This is my mother-in-law's necklace.

2. I don’t like being alone in the house at night.

⇒ I don’t like staying at home alone.

3. If you decorate the house on your own, it will be cheaper.

⇒ If you decorate by yourself, it will be cheaper.

4. No one helped me repair the roof, you know.

⇒ I repaired the roof on my own.

5. Grahambell was the man who invented the telephone, wasn’t he?

⇒ Grahambell was the inventor of the phone, wasn’t he?

6. He prefers to live alone rather than share a flat.

⇒ He prefers to live on on his own.

1. this is my mother-in-law's necklace

2. i don't like staying at home alone

3. ..... by yourself, u will be cheaper

4. ....... on my own.

5. ..... the inventor of the phone,....

6. ...... on his own