选出你听到的句子。 ( ) 1. A. What do you see? B. What can you see? C. What do you do? ( ) 2. A. When do you get up? B. When do you sleep? C. When is your birthday? ( ) 3. A. They're drinking tea. B. They're drinking juice. C. It's drinking water. ( ) 4. A. What is it doing? B. What is he doing? C. What are they doing?