It would be best if you made such an invitation personal; mentioning your school specifically. But I can help you with an example
Dear students and teachers!
Do you want to know how to best protect our environment? Do you need the motivation to remember to recycle?
Meet Al Gore, one of the leading voices in the fight against man-made global warming.
Al Gore will give you the motivation you need!
Annabel Adams is the girl he falls in love with me.adms daughter
Please refer to the attachment for the explanation and answers to your questions.
A. because Conservative is the opposite of liberal
