给下列的问句选择合适的答语。 ( ) 1. What are you going to do? ( ) 2. Where are you going? ( ) 3. Are you going to the park? ( ) 4. Who are you going with? ( ) 5. Where is the library? A. I'm going to the zoo. B. I want to buy a book. C. I'm going with my sister. D. It's over there. E. Yes, I am.