During the summer vocation we went back to the school to pay a visit to our teachers though it was hot.
A. especially; in particular
B. specially; especially
C. special; especial
D. particularly; specially
网友回答
A. especially; in particular
(答案→)B. specially; especially
C. special; especial
D. particularly; specially
解析：前后空需要副词修饰，排除C；依据意思前空表示目的性，后空表示尤其特别意思。