21.   This extremely flexible system allows the hotel to tailor service preferences for each guest.

22.   A stretch such as would not be self-contained if the system allowed utterances to begin with Men...

23.   It would be self-contained if the system only allowed Men...

24.   Digital switching systems allow telecommunications providers to record details of calls to justify charges made for the services provided.

25.   Such a system allows you to leave and receive messages on a telephone which is part of a computerised network.

26.   As the system allows the information to be updated easily, it can provide an important service to those applying for jobs or places in higher education.

27.   The system has also allowed the hospital to develop fringe benefits.

28.   The TEC system obviously allows people to make money by exploiting young people.

29.   They are planning a new national NHS information service for patients, and they claim a new system will allow complaints to be answered.