In this task, you will be given a short story. One sentence from the story is chosen. Consider the events that happen before that sentence, or are likely to have happened before it. Does any of them directly cause it, or simply make it possible? You should write your answer in the form " A >causes/enables> B". Try to use phrases and sentences from the story to compose your answer when possible.

Q: story: Sam decided he wanted to ride his bike to work to get some exercise. Sam didn't often ride his bike and had forgotten how to use the gears. Getting to work was simple since it was all down hill. Going home was difficult since the ride was all uphill. He arrived home exhausted and decided to practice gear-shifting.
selected sentence: Going home was difficult since the ride was all uphill.

A: Sam forgets how to use the gears >Causes/Enables> Going uphill is difficult
****
Q: story: Susie had a dance coming up. She was afraid of getting asked. She was not sure if anyone would do it. But thankfully her friend Fred asked her. She was happy to have Fred ask her.
selected sentence: She was afraid of getting asked.

A: Susie has a dance soon >Causes/Enables> Susie is afraid no one will ask her to it
****
Q: story: Susie had a dance coming up. She was afraid of getting asked. She was not sure if anyone would do it. But thankfully her friend Fred asked her. She was happy to have Fred ask her.
selected sentence: She was not sure if anyone would do it.

A:
Susie's dance is coming up >Causes/Enables> She is not sure if anyone will ask her
****