SUSAN: Can't you come in and have tea now, Peter?
PETER: Not yet. I must water the garden first.
SUSAN: Do you have to water it now?
PETER: I'm afraid I must. Look at it! It's terribly dry.
SUSAN: What a nuisance!
PETER: Last summer it was very dry, too. Don't you remember? I had to water it every day.
SUSAN: Well, I'll have tea by myself.
SUSAN: That was quick! Have you finished already?
PETER: Yes. Look out of the window.
SUSAN: It's raining! That means you don't need to water the garden.
PETER: That was a pleasant surprise. It means I can have tea, instead.