I have just come in to see if I can be _________ any assistance to them. A. with B. on C. at D. of
2023-02-14 19:11:09 103次 2010年吉林毓文中学高二模块考试 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
I have just come in to see if I can be
_________ any assistance to them.
A. with B.
on C. at D.
of
本题链接：
