HOW TO CHANGE BASIC ENGLISH INTO BUSINESS ENGLISH:
https://www.youtube.com/watch?v=_2ZDNgtAsbw
Let's get down to work, shall we?
Let's get down to business.
Let's cut to the chase.
Let's get the ball rolling.
Let's start. Let's begin.
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LET -
Let me begin/start
Let me start by saying ...
Let me start with a joke ...
Let me introduce myself ...
(Let me help you, show you, ask you a question, explain, be clear, finish, interrupt, know, tell you a story, call you back later, give you my e-mail address, give you my phone number, spell it, pass, buy you a drink, see, take a selfie, get this straight)
https://englishlive.ef.com/en-gb/resources/english-practice-quizzes/management-english/
https://www.cambridgeenglish.org/test-your-english/business/