1.During the Iraq War the castle ___was used as__________ a prison.
2.Computer __is used to_________deal with sales information in big companies.
3.Telescopes ___are used for___________finding new stars and planets by scientists.
4.He __used to_________ swim in the river when he was a child.
5.Bridges _are used by_____________ people to get across rivers and roads.
6.He has not _been used to__________ getting up so early yet.