1.   Adele is learning to be a librarian on evenings and weekends in case the need should arise.

2.   All staff are expected to do some overtime, if the need arises.

3.   Alterations to your flight details sometimes occur for operational reasons and we reserve the right to make these if the need arises.

4.   Effort and application were not needed in the first instance and did not come easily when the need arose.

5.   Families, too, are a great source of help and are roped in when the need arises.

6.   Her powers seem curiously independent of age, and she can call upon extraordinary sources of energy when the need arises.

7.   If the need arises, the Profile will be translated into other languages.

8.   In other parts of the world, the same needs arise but they are met by different structures.

9.   Mr Osborne claims that private hospitals do not have the necessary expertise when the need arises.