Phrase "IN USE" in English Grammar

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The phrase "in use" means something is currently being used or occupied.
Here are some examples:

* "The restroom is currently in use." This means someone is inside the restroom at that moment.
* "This phone line is in use." This means someone is already on the phone using that particular line.
* "The parking space is in use." This means a vehicle is currently parked in that space.
Essentially, "in use" indicates that something is not available for immediate use or access because it's already being utilized by someone or something else.

The phrase "out of use" means something is no longer being used or is not currently available for use.
Here are some examples:

* "The old elevator is out of use." This means the elevator is broken or not functioning and cannot be used.
* "This phone number is out of use." This means the phone number is no longer active or connected to a working line.
* "The library is temporarily out of use due to renovations." This means the library is closed for a period of time and cannot be accessed by the public.
Essentially, "out of use" indicates that something is not currently functional or accessible for its intended purpose.

I hope this helps and I look forward to assisting you with any further queries you may have.