1 .We know him. We know his friends.
We know him and his friends.
2 . The coat was soft. The coat was warm.
The coat was both soft and warm.
3 . It is stupid to do that. It is quite unnecessary.
It is quite unnecessary and stupid to do that
4 . I wanted to go. He wanted to stay.
I wanted to go but he wanted to stay.
5 . Your arguments are strong. They don’t convince me.
Your arguments are strong but they don’t convince me.
6 . You can go there by bus. You can go there by train.
You can go there either by bus or by train.
7 . I was feeling tired. I went to bed when I got home.
I was feeling tired so I went to bed when I got home.