Answer:
I wanna say vas because if I'm correct the Chart for Yo Tu and everything else (I forgot them- ;-; sorry about that) But it should be vas If no I do apologize for that!
I don’t know the first one but the second one is para ganar es necesario guardar la portería bien
The correct answer is b. la
That is because "ropa" which means clothes or clothing is a feminine noun in the Spanish language, so when the first person says that they have to buy clothes, the second one uses "la" because "la" is used for the feminine "ropa". "lo" would be for masculine while "los" would be for masculine plural".
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