Ответ:

Oh dear, the bus is late.

If the bus doesn't arrive soon, we will be late. If we are late, we miss the beginning of the film.

If we miss the beginning of the film, we will not understand the story.

If we don't understand the story, we will be bored.

If we are bored, we fall asleep. If we fall asleep, we miss the end of the movie.

Let's not go to the cinema.