B
to the excitement of everyone相当于to everyone's excitement.
”to one's +名词“是一种常见的结构,如:to one's joy/happiness/amazement/disapointment,等等.意思是“令某人……的是”.这是一种介词短语结构.前面只能用much/a little等来表示程度.
very修饰形容词或副词.如:very good, very fast.
pretty修饰形容词.如:pretty good.
well修饰动词的过去分词.如:well educated.