Usages of by
The dress was designed by my cousin.
El vestido fue diseñado por mi prima.
My sister is upset at first, but then she is surprised by my support.
Mi hermana está molesta al principio, pero luego está sorprendida por mi apoyo.
Although he seems calm, he is surprised by the news.
Aunque parece tranquilo, él está sorprendido por la noticia.
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