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1．There are many busy roads in the city.（改为一般疑问句）
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2．The children must play football on the road.（改为否定句）
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3．We mustlook out for the traffic lightsfirst.（对划线部分提问）
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4．An old womanis crossing the road.（对划线部分提问）
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5．You can’t watch TV nowbecause it’s late. (对划线部分提问)
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6．keep, desk, tidy, I, must, my, clean, and (.)（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
