Hello! :) Fellow EngLang student here, but these are just my thoughts.
I have some questions for you to think about when answering this:
- What makes up an imperative?
- Do you think this sentence fits the other main sentence types (declarative, interrogative or exclamative)?
a possible answer (click on this to reveal)
I think this sentence would be an imperative as it gives a direct order or instruction and the subject has been omitted. Using please is a politeness strategy.
Hope this helps :)