Complete the sentences with the phrases

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers.
   at intervals      in exchange for      On special occasions      stood for      under control   
1. When you give something in order to get something else in re you give one the other.
2. such as birthdays and weddings, we important events in our lives.
3. You are when you become a member of and spend time working in that part of a country's military
4. Things that are are spaced certain distances apart from each other.
5. If certain letters or objects represented something else, then they that thing.