1 . 词组替换

1. He made use of his experience as a photographer to make a documentary programme.
2. To get the accurate answer, they looked up information in many books.
3. The economy needs more skilled workers very much, yet millions remain unemployed and unemployable.
4. Many families have been separated by war and revolution.
5. The concert was excellent --- there were lots of well-known songs with some new ones added.