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（1）A : Whose ________ is this?
B : It's Helen's.
（2）A : Whose ________ are they?
B : They're Mike's.
（3）A: I'd like ________ ________ ________ ________ , please.
B: Here you are.
（4）A: The ________ are too small.
B: You can try this pair on.
（5）A: How much is the ________ ?
B: Sorry, I don't know.
（6）A: What's the time?
B: It's ________ ________ .
（7）A: What time do you go home?
B: I go home at ________ ________ .
8.A: ________ ________ ________ now.
B: OK.
（9）A : Shall we ________ ________ ?
B: Good idea.
（10）A: It's ________ ________ .
B: Yes, it's time to ________ ________ .
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
