Fill in the blank with ONE PREPOSITION: The technician checks ___ the air conditioning system every morning.

Answer explanation

on - checks on meams to monitor or inspect

Fill in the blank with ONE PREPOSITION: We are working ___ the new electrical installation right now.

Answer explanation

on – "Working on" shows the focus or effort applied to a specific project or task.

Fill in the blank with ONE PREPOSITION: He usually focuses ___ the maintenance schedule to avoid delays.

Answer explanation

on – "Focus on" highlights concentrating or directing attention towards something.

Fill in the blank with ONE PREPOSITION: She is talking ___ the client about the ventilation requirements.

Answer explanation

to – "Talking to" means speaking or having a conversation with someone.

Fill in the blank with ONE PREPOSITION: The engineers always depend ___ accurate measurements for their designs.

Answer explanation

on – "Depend on" refers to relying on something or someone for support or resources.

Fill in the blank with ONE PREPOSITION: They are waiting ___ the delivery of the HVAC units today.

Answer explanation

for – "Waiting for" indicates anticipation or expectation for something to arrive or happen.

Fill in the blank with ONE PREPOSITION: He explains ___ the team how to troubleshoot the system.

Answer explanation

to – "Explains to" indicates the act of providing information to someone.

Fill in the blank with ONE PREPOSITION: The project manager often thinks ___ ways to improve efficiency.

Answer explanation

about – "Thinks about" refers to reflecting or considering something.

Fill in the blank with ONE PREPOSITION: We are preparing ___ a presentation on the new electrical standards.

Answer explanation

for – "Preparing for" means getting ready or making arrangements for something.

Fill in the blank with ONE PREPOSITION: She is looking ___ the blueprint to check the duct sizes.

Answer explanation

at – "Looking at" refers to observing or examining something visually.