Do they have oranges?的单数形式.

Do they have oranges?的单数形式. They have some oranges(改为单数形式) Do they have oranges?改为单数句 They are oranges.(变为单数形式） Do they like oranges?改为单数 do they boys have oranges?改为单数句 ____the boy ____an orange? they aren't orange oranges.改为单数形式 THEY的单数形式 They have a good time 的单数形式 They are oranges 改为单数 Are those oranges?单数形式 play,fly,have,watch,go,do的第三人称单数形式