Gasto (past tense). Gasta could also work because he could be saying that she spends a lot at the clothing store in general, but it is Gasto.
Answer:A
Explanation: cost 500 dollars
It's basically saying to write a short summary about a trip you made using the words (por y para) and when done to read it to a class mate, so for example if you went to Miami you would put Yo fui de viaje a Miami por qué quería ir a disfrutar el sol y las playas. También fui a Miami para ir a un restaurante que se llama Mortons.
It would either be que tal or buenas i would say is buenas hope this sort of helped