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参考：1. Where did you go? (Beijing, the Great Wall)
2. How did you get there? (by plane)
3. When did you go there? (last winter holiday)
4. What did you do there? (took photos, went skating, ate hamburgers)
5. Who went there with you? (my mom)
具体要求：1. 可参考提示词和短语，不少于五句话。
2. 语法正确，语句通顺，书写清晰，规范完整。
Dear Mary,
Gu Ailing
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
