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.