The document discusses various prepositions and their usage. It notes that the mixer is located downstairs on the first floor. Sanitary facilities are located along the avenue. The engineer is inspecting around the construction site. The surveyor is observing across the theodolite.

2. FROM

3. OFF

4. OUT OF

5. DOWN
The mixer is down stairs on the first floor.

6. ALONG
Sanitary facilities are along the avenue

7. AROUND
The engineer inspecting around the
construction.

8. ACROSS
The surveyor observes across the theodolite.