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1. These ______ (craftsman) work very carefully. They make beautiful desks and chairs.
2. — Helen, where are you?
— I ______ (cook) in the kitchen.
3. There ______ (be not) any buildings now, but in the future, there ______ (be) three tall buildings.
4. We ______ (take) two art lessons on Wednesday afternoon, but yesterday afternoon we ______ (not take) the art lessons, because our art teacher wasn’t in Shanghai. She ______ (come) back next week.
5. Peter is good at ______ (eat). He likes ______ (eat) different kinds of food.
6. In the past, people ______ (use) paper to write letters.
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
