情境反应，选择正确的答案。
1. 当你告诉别人可以乘飞机去北京时，应说：[ ]
A. You must go to Beijing by plane.
B. You can go to Beijing by train.
C. You can go to Beijing by plane.
2. 当你告诉别人你有时步行去动物园时，应说：[ ]
A. I go to the zoo by bus.
B. Sometimes I go to the zoo on foot.
C. I often go to the zoo on foot.
3. 当你想知道去超市的路怎么走时，你问：[ ]
A. How can I go to the supermarket?
B. How do you go to the supermarket?
C. Can I go to the supermarket?
4. 当你告诉别人车站离这儿很远时，你说：[ ]
A. It's very far.
B. It's not far.
C. It's near.
