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1. I am playing the piano now. (用yesterday改写句子)
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2. Lucy did her homework at home. (改为否定句)
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3. I went to school by_bike yesterday. (对画线部分提问)
________ ________ you go to school yesterday?
4. They played football last Sunday. (改为一般疑问句，并作否定回答)
—________ they ________ football last Sunday?
—________,________ ________.
5. was, driver, before, my, a, grandfather. (连词成句)
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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
