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.