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[[QOrDeR]]People should save energy.（改为同义句）
People ___________ ____________ energy.
【小题2】We should save waterbecause water is useful.（对划线部分提问）
________ ________ we ________ water?
【小题3】We usewood to make tables and chairs. (对划线部分提问）
_______do we use ________make tables and chairs?
【小题4】You shouldsave waterto protect the Earth. (对划线部分提问）
______ should I _______ to protect the Earth?
【小题5】We should walk to the restaurant. ( 改为否定句)
We ______ ______ walk to the restaurant.
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
