In the following examples, you need to use the correct form of 'a', eg So, if you want to say that you did your work experience at a school, you need to check the gender of the word 'school ...

To help remember the dative prepositions, sing them to the first two lines of the Christmas carol Good King Wenceslas. Remember that King Wenceslas first set out on the ‘date’ (= dative ...