Imagine that it is your friend's birthday and you want to prepare him or her a surprise party. Plan everything you want to buy (food & drinks, decorations, a present and so on) before going on shopping.
Imagine that you meet your gang as usual. First, talk about your stuff using the informal words and phrases provided and later comment on a film, a TV programme, a book, etc. that some of you have seen or read recently.
Imagine that you are in a foreign country and you need to look for accomodation. Prepare a dialogue in a hotel between you and the receptionist talking about the different hotel services and facilities before booking the room.