these are apples怎么变单数
are these apples?改为单数形式
these are our apples改为单数句子
these are apples 改为单数形式
These are apples变成单数形式
These are our apples改为单数
These are apples改为单数形式
these are apples变单数句子和they are ——dragonboats——对花线部分提问
these coats are yeiiow变单数形式
These boxes are brown.变单数
These are my friends .变单数
These are bedrooms.(变单数)
Are you tourists?变单数怎么变.