Case and the idea from the first sentence. 1 We might see something we want to buy. Take some money a case we see something we want to buy. 2 My flight may be delayed. I always travel with a book delayed 3 Someone might come. Let's buy more food 4 Bill might call. I don't want to go out 5 You might lose your suitcase. Write your name and address on your suitcase I might not see you before I leave. I'll say goodbye now before I leave.