词组替换

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