It's necessary _______ us to keep our pets clean every day. [ ]A. of B. for C. with D. between
A. of B. for C. with D. between
题目简介
It's necessary _______ us to keep our pets clean every day. [ ]A. of B. for C. with D. between
题目详情
A. of
B. for
C. with
D. between
答案