【单选题】
I appreciate（）the opportunity to visit your factory.
I appreciate（）the opportunity to visit your factory.
A、 having been given
B、 to have been given
C、 having given
D、 to have given
题目答案
答案解析
略
略
A、 having been given
B、 to have been given
C、 having given
D、 to have given