Combine each pair of these sentences
1. Her father has just returned. He has been to Paris
2. Bill wants to go out with me. We saw him at the dance
3. Flies carry disease. They come mostly in the summer
4. Swimming is a good sport. It makes people strong
5. Grass is always green in England. Cows and horse love it
6. Air is made up of many gases. We breathe it
7. Jackie Chan is famous actor. I know his sister well
8. The house needs mending. We are living in it
9. This tree should be cut down. The branches of the tree are dead
10. Tell me the reason. You left the city for it
11. That river is not safe for swimming. Its water is polluted
12. Can you suggest the time? We'll meet at that time
13. Mr Johnson is going to Spain. His daughter has been living there for 4 years