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1．The teacher can answer the questions __________ (easy).
2．Wei Hua ________ (meet) Yang Ling on River Road this morning.
3．Some _________ (child) run or play on the road.
4．Let’s finish ________ (they) quickly.
5．What must Liu Tao _________ (do) in the library?
6．We should keep _________ (health).
7．You must stay _________ (safe) on the road and cross it _________ (safe).
8．You mustn’t run ___________ (quick) on the road.
9．The bus is _________ (stop) on the road.
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
