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（1）Tree Planting Day ________ (be) on March 12th.
（2）I'm twenty years old.It's my________ (twenty) birthday today.
（3）Our country gets________ and________(strong)．
（4）It's over 1000________ (year) old.
（5）It's one of the________ (great) wonders in the world.
（6）We made________ (we) clothes from animal furs.
（7）There are many________(leaf) on the ground.
（8）Beijing is the capital of________ (Chinese)．
（9）The students are busy________ (grow) flowers.
（10）It's important for everyone________ (read)books.
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
