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1. Rubbish makes our city _____________(肮脏的).
2. The weather __________(变得) windy and cold this morning.
3. He wants _____________(打扫) the room with his parents.
4. You can _________(穿) your new sweater today. It’s cold.
5. We should keep our school (干净的).
6. What (使……变得)your bedroom messy ?
7. Don’t throw rubbish on the (地面).
8. The river is dirty. We can see a lot of ___________（垃圾）in it.
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
