Fiona is _____ (special) happy today because it is her 12th birthday.

问题描述:

Fiona is _____ (special) happy today because it is her 12th birthday.

Fiona今天特别开心,因为今天是她12岁的生日
especially解释为尤其,特别

特别地,用副词修饰happy 填specially

specially副词修饰形容词

Fiona is specially happy today because it is her 12th birthday.

是specially,不是especially,因为没有递进关系.
这是带有递进关系的句子:
She SPECIALLY came to see her five children,ESPECIALLY the youngest of them