I don't like the competition in which people compete for prizes 这句话有错吗?并且请造一句新的句子,要求用上in which定语后置,

I don't like the competition in which people compete for prizes 这句话有错吗?并且请造一句新的句子,要求用上in which定语后置,
I don't like the competition in which people compete for prizes 这句话有错吗?
并且请造一句新的句子,要求用上in which定语后置,

I don't like the competition in which people compete for prizes 这句话有错吗?并且请造一句新的句子,要求用上in which定语后置,
这个句子是对的,in which定语后置例句：
Behavior is a mirror in which everyone shows his image.
行为举止是每个人展示自我形象的镜子.