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A: Hi, Mom. Could I go to the cinema with Grace tonight?
B: No, you 1．. Your grandparents are coming over for dinner tonight.
A: Oh, I want to see them! Hmm... could I at 2． go out with Grace now?
B: Yes, as long as you promise to come back early.
A: OK, Mom! Oh, 3． are they arriving?
B: At about 6:00 p.m. and I need you to help me in the kitchen.
A: OK! I’ll be back 4． of them.
B: Sounds great. See you! 5． be late!
A: Bye, Mom!
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
