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Hello! I'm Lingling. It's six in the evening. My mum is cooking. My father isn't at home. He will be back at seven o' clock. I am doing my homework. My grandfather is reading a newspaper. My grandmother is watching TV. We are all waiting for my dad. He is a doctor. My mother is a teacher. We live a happy life!
1．Lingling is doing her homework.2．Lingling's grandmother is cooking.
3．Lingling's father will be back at eight o' clock.
4．Lingling's mother is a teacher.
5．Lingling's grandfather is watching TV.
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
