Multi-select problem: How does the next paragraph end?

There's an old man in a brown shirt and denim shorts mowing his lawn in a riding lawn mower. He begins mowing the lawn in his backyard as he goes past some bushes and shrubs. he

OPT: [I] continues mowing the grass and around the curb while a very large cloud of dust from the mower reaches to human eyes.; [II] walks across the lawn and stops as he notices his back porch is gone and he is seen missing him.; [III] goes around in a circular fashion as he tries to cover the areas around and in between the hedges that are next to his house.; [IV] 's shown a little bit of dried up grass and flowers as well as a large spreading bush next to him.;
[III]