Past continous vs simple past

A: how [blank_start]did you break[blank_end] your arm? B. It's a crazy story! Ramon and I [blank_start]were riding[blank_end] our bikes in the park when a cat [blank_start]ran[blank_end] out in front of me. i [blank_start]was going[blank_end] pretty fast, so when I [blank_start]tried[blank_end] to stop, I [blank_start]went[blank_end] off the road and [blank_start]fell[blank_end].

A: You'll never guess what [blank_start]happened[blank_end] to me this morning! B: What? A: Well, I [blank_start]was brushing[blank_end] my teeth when suddenly the water [blank_start]went[blank_end] off. I had toothpste all over my mouth, and I couldn't wash it out. B: So what did you do? A: Fortunately, I [blank_start]had[blank_end] a big bottle of water in the refrigerator, so I [blank_start]used[blank_end] that water to rinse my mouth.

A: Guess what happened to me last night! As I [blank_start]was getting[blank_end] into bed, I [blank_start]heard[blank_end] a loud noise like a gunshot in the street. Then the phone [blank_start]rang[blank_end]. B: Who was it? A: It was Mariana. She always calls me late at night, but this time she had a reason. she [blank_start]was driving[blank_end] right past my apartment when she [blank_start]got[blank_end] a flat tire. It was very late, so while we [blank_start]were changing[blank_end] the tire, I [blank_start]invited[blank_end] her to spend the night.