句型转换。

1. What is it? (变复数句子)

    What ______________ ______________?

2. I know its colour. (变否定句)

    I ______________ ______________ its colour.

3. Australia is south and east of China. (对画线部分提问)

    ______________ ______________ Australia?

4. Australia's flag has stars. (变一般疑问句并作肯定回答)

    ______________ Australia's flag ______________ stars? 

    ______________, it ______________.