求详解Our class__fifty-seven students went to the Great Wall for a visit.

问题描述:

求详解Our class__fifty-seven students went to the Great Wall for a visit.
A.consisted of
B.consisting of
C.to consist of
D.having consisted of
为什么选B?

“我们的班级”包括“57个学生”,是主动关系,因此要用ing形式.