In formal writing, should is often used to mean if. I am available for interview and would be happy to provide further references should you require them. (=
I am available for interview and would be happy to provide further references if you require them.)
Put the words in the correct order to make sentences using should with this meaning.
1 further / please / contact / require / hesitate / any / do / you / should / not / information / me / to
2 available / request / references / should / them / on / are / you / require
3 please / the / possible / vacancies / become / any / opportunity / contact / at / should / earliest / available / me
4 test / after / days / you / should / retake / can / so / the /60 / you / wish / to / do
5 wish / matter / phone / appointment / should / discuss / to / please / an / you / this / further / to / make