The best way to learn proper English is to read news report, and watch news on TV. Watching TV shows is a great way to learn casual English, slang words, understand culture reference and humor. If you have already watched these shows then you may recall the words used in the following dialogs.

Wait a minute.
Why am I doing all the giving here?
The Big Bang Theory Season 2, Episode 2

Three shots or, I don't know, two.
No, WAIT. Is it two, or is it three?
Breaking Bad Season 2, Episode 1

Wait, and Badger is gonna spill?
Like the Exxon Valdez.
Breaking Bad Season 2, Episode 8

Wait, and let him win?
The Big Bang Theory Season 5, Episode 17

Hold on. Wait.
The Big Bang Theory Season 4, Episode 9