We others’ homework.
A. against copying
B. are against to copy
C. are against copying
D. againsted copying
网友回答
A. against copying
B. are against to copy
(答案→)C. are against copying
D. againsted copying
解析：against可用作形容词和介词，表示反对，对立的意思。句意；我们反对抄袭别人的作业。本句中against是介词，后面接名词或者动名词作宾语，故选C。