请问到底是all of these还是all these

请问到底是all of these还是all these all of these stamps All of these things of these,是用all还是both?为什么?怎么区别? All of these 后面加 are 还是 is?比如说All of these are about love. all of these words 英语怎么说? silent all these years These are all E______countries all these years英汉翻译 silence all these year是首什么歌 请问“all of little some things these are memories”是哪首歌里的一句? All these cause the pollution of_______ we live.填of which 还是