给下列的问句选择相应的答语。 ( ) 1. Do you want to enter? ( ) 2. Is the race about kites? ( ) 3. Must all competitors stay on the track? ( ) 4. Can they ride too close to other bikes? ( ) 5. Was there a puddle? A. Yes, there was. B. No, they can't. C. Yes, I do. D. Yes, they must. E. No, it isn't.