Bob ran down the road and he fell over.

The thunder roared so the Hobbits hid.

Bilbo slept in a cave so the goblins attacked.

The cart came to a wheezing halt as soon as Gandalf strode into the scary hobbit hole.

Jim was interested in the idea until he rang his negative friend.

Owls are nocturnal so this means they are active at night and  have excellent eyesight.