We know ______ about the new teacher except that she just came back from the US. We hope to know her better.
John is ______dishonest boy. He has______ useful book.
–What about going for a walk, Sally? -_______
-_____ the population of China?
.-Could you give me a______ on how to learn English_____?
-Robert is _____ to face dangers. Don’t be worried about him.-I think so.