What sentence should replace the following incorrect sentence?

"This door to remain unlocked when occupied."

1) This door to remain unclosed while open.
2) This office must have the door unlocked at all times.
3) This door will remain unlocked when the office is occupied.
4) This sentence is correct as written.

The correct sentence to replace the incorrect one is, "This door will remain unlocked when the office is occupied." For the review questions, commas are used to separate clauses, list items, and to add pauses for better understanding.

Explanation:

The sentence that should replace the incorrect sentence "This door to remain unlocked when occupied" is option 3: "This door will remain unlocked when the office is occupied." The corrected sentence clarifies that the door is to remain unlocked when there are people in the office, which aligns with safety and access regulations often found in public and office buildings.

Review Questions

For the sentences provided, the use of commas should be as follows:

I finally found my keys, and I got to work just in time.
Mrs. Contreras threw out her old coffee table and cleaned the carpet.
Taking the elevator to the roof, we hoped we could see the skyline and the bay.
Though Susan wasn't feeling well, she went to the store anyway and bought ice cream, pizza, and candy.
I let my neighbor borrow my phone because she said hers was tapped by the police.