whose pens are these?还是whose are these pen?区别?

whose pens are these?还是whose are these pen?区别? Whose pens are these?(Betty)They____________. whose pens are these?____(these/they) are mine whose sunglass are these? ----Whose trousers are these? Whose shoes are these Whose clothes are these Whose gloves are these 1.Whose pens are these?改为同义句 what are these?or whose are these? whose are these pencils?和whose pencils are these? Whose camera are these? Whose camera are these?什么意思?