Class 3 declared themselves a responsible classmate as monitor of the class.
A. in favour of
B. in honour of
C. on account of
D. on behalf of
网友回答
(答案→)A. in favour of
B. in honour of
C. on account of
D. on behalf of
解析：句意:三班同学他们自己宣布同意让一个有责任心的人作为他们班的班长。in favour of同意；in honour of为纪念；on account of因为；on behalf of代表。根据句意故选A。