special | reasonable, unreasonable | formal, official | polite | strange, unusual | repeated | urgent | explicit, particular, specific | written

make, put in, submit
I''ve put in a request for a room with a view of the sea.

get, have, receive
We have had repeated requests for a pedestrian crossing near the school.

agree to, comply with, grant | respond to | refuse, reject, turn down | repeat

at sb''s ~
The play was written by Agatha Christie at the request of Queen Mary.

by ~
The writer''s name was withheld by request (= because the writer had asked for this to be done).

on/upon ~
We will arrange accommodation on request.

~ for
The helpline was inundated with requests for information on the crash.

available on request
A detailed list of our publications is available on request.

by popular request
The film is being shown again by popular request.

a number of requests

explicitly, expressly, specifically | formally | politely | reasonably
(law) Auditors will be required to provide any information reasonably requested by the bank.

urgently | repeatedly

from
We have requested some information from the company.