Detailed Instructions: In this task, you're given the title and three arbitrary sentences out of a five-sentence story. You are also given three additional sentence options, a, b, and c, that may or may not belong to the story. Your job is to pick the two options that seamlessly connect with the rest of the story; note that the selected choices may fit into the story at any point. Indicate your selected choices in order, i.e., as 'ab'/'bc'/'ac' and not as 'ba'/'ca'/'cb'. If options are equally plausible, pick the ones that make more sense.
Q: Title: Marissa never learned how to type fast. She still used only two fingers on the keyboard. She practiced all night, adding fingers slowly. Choices: a. But as she had a whole report to type for work, she learned. b. At the end she found she had noticeably improved. c. He stood his ground and never let anyone else push him around.
A:
ab