know if one is Arthur or Martha

knew if one was Arthur or Martha knowing if one is Arthur or Martha known if one was Arthur or Martha knows if one is Arthur or Martha 三单 knows if one is Arthur or Martha knowing if one is Arthur or Martha 现在分词 knew if one was Arthur or Martha 过去式 known if one was Arthur or Martha 过去式 known if one was Arthur or Martha 过去分词 knew if one was Arthur 过去式 Martha 过去式 known if one was Arthur 过去分词 Martha 过去分词 knowing if one is Arthur 现在分词 Martha 现在分词 knows if one is Arthur 三单 Martha 三单