I would say A because if she is suprised that he only says dear than it would more than have to be A
Eres alto translates to you're tall and Usted es alto translates to You are tall.
So I'm going to go with D
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1- hablar
2- quería
3- puse
4- era
5- una
6- entre
7- fuera
8- conocía
9- toda
10- la
11- decía
Marta está poniendo el sombrero en la mesa.
