读句子,选出正确的答语。
① What are you going to do? ____ A. By train.
② When are you going?____ B. Take a trip.
③ Where are you going? ____ C. Yes, I am.
④ How do you go to the zoo____ D. At 3 o'clock.
⑤ Are you going to use any books? ____ E. I'm going to Beijing.