Viết câu sao cho nghĩa đổi

Viết câu sao cho nghĩa ko đổi :
1 It is wrong of us to write one the walls or tables in our classroom.
=> We______________
2. The Sahara Desert is the hottest deserts in the world.
=> No deserts in the world__________
3. These books are small.
=> They are___________
4. Does your father cycle to work.
=> Does your father get______________