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1. We often ______________ (do) exercises at ten o’clock in the morning. But now we ______________ (dance).
2. ___________ ( be) there any apples on the desk? ________ (be) some apple juice in the bottle.
3. --- How many coats ___________ Mary ________ (have)?
---She ________ (have ) three,
4. Look at the __________ (bank). __________ (they) windows are tall.
5. There _______ (not be) any milk in the glass. Let’s _____ (buy) some now.
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
