to let escape, let loose, set free / to miss (an opportunity)

chance (an opportunity or possibility)

please give me / (expressing a request) please do something for me

Please do (action)

Please do not (do)

please give me / (polite, imperative) please do something for me; expressing a request

business opportunity

last chance

(photography) best moment to take a picture of a moving subject

Please have a seat. / Please sit down.