What is it?When is it?How is it?Who is it?这些句What is it?When is it?How is it?Who is it?这些句子成立吗?

it is clean when it is black.it is dirty when itis white.what is it what is white when it is dirty 猜猜what是什么 what time is it 与when is it 的区别 It is clean when it is black.It is clean when it is black.It is dirty when it is white.what's it? 猜谜语：It is clean when it is black.It is dirty when it is white.What's it 智力测试What is black when it is clean and white when it is dirty? What is clean when it is black and dirty when it is white? What is black when it is clean white when it is dirty? what is black when it is clean and white when it is dirty是----- What is black when it is clean and white when it is dirty? What is biack when it is clean and white when it is dirty? what is biack when it is ciean and white when it is dirty?(翻译意思） What is clean when it is blanck and dirty when it is white? What、is、black、when、it、is、clean、and、when、it、is、dirty·谜底是什么? 英语智力挑战题It is round when it is drawn.It is square when it is written.It is short when it is in winter.It is long when it is in summer.What's it? It is round when it is drawn,It is square when it is written,It is short when it is in winter,Itis long when it is in summer.What is it? 英语：读一读,想一想,猜一猜What is black when it is clean and white when it is dirty?It is a ( ). _____?it is on thursday.a:what is it today b:what day is it today c:what day is it on d:when is it