–There is _______ interesting book on the teacher’s desk. --Oh, ______ book is Wei Fang’s.
It began to rain ______ I was walking in the park.
Turn the computer off, Peter! You ______ play games so late any more.
— ______ you visit Beijing during your holiday? — No. I ______ to Hong Kong.
— May I ______ the book from you? — Sorry. I have promised to ______ it to Tom.
— What are you going to do this weekend? — I’m not sure ______. Maybe I am going swimming.