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（1）A. He is in the sitting room.
B. He is listening to music.
C. He likes listening to music.
（2）A. Yes, they are.
B. No, there aren’t.
C. No, there isn’t.
（3）A. I can make a model plane.
B. I like making a model plane .
C. I am making a model plane.
（4）A. Li Lei is.
B. He is Miss Li’s student.
C. He is talking to Miss Li.
（5）A. Yes, I do.
B. Yes, I can.
C. Yes, I am.
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
