—Do you know the boy _______ is talking to Mr. Smith?—Yes, he's my brother.A. what B. which C. Who
Beijing, the capital of China, is one of _____ cities in the world.
There is _____ wrong with this computer. It doesn't work well.
Paul and I ______ tennis yesterday. He did much better than I.
_______ do you play football? — Once a week.
— Mum, where is Dad? — He flowers in the garden now.