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 ______________.