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[[QOrDeR]]My mother ________ to work.（ ）
A. walking B. walks C. walk
【小题2】He is ________ years old.（ ）
A. eighteenth B. eight C. eighth
【小题3】We ________ a happy family.（ ）
A. is B. are C. am
【小题4】He goes to work by ________.（ ）
A. a bus B. bus C. buses
【小题5】We like to ________ the animals at the zoo.（ ）
A. watch B. watches C. watching
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
