问题补充：
We saw several natives advancing towards our party, and one of them came up to us, we gave some bells and glasses.
A. to which
B. to whom
C. with whom
D. with which
答案：
A. to which
(答案→)B. to whom
C. with whom
D. with which
解析：to which在此引导非限制性定语从句，其中的to与句中的动词give搭配。
