everyone is r .let's start

everyone is r .let's start _____ everyone is here,let's start our meeting? since everyone is here ,let's start.此句中的since是什么意思 Everything is r_____.Let's start work. let;s start smile let's start from Let\'s Start The let’s start over again is better than i quit Everyone _____(is/are) here.Let's begin. let‘s start from here Let's start the ( ) now. Let's start from here