a question of whether (这里的of建议改成about会比较好一点）
“They agree to keep pets.”是不是这样会更好些：As far as they are concerned,they think that……,原句语法上没有错误
“In my opinion,we shouldn’t keep pets.”或者：But I don't agree with them,……
你这篇文章写得不错嘛,没什么语法错误的.
Following are our opinions这句用法对的,全文都挺流畅的阿