我们开始开会英文

Since everyone is here,let's begin the meeting.

开会的英文：have a meetingbe at a meetinghold or attend a meeting参考例句：I'm sorry, but I'm in a meeting now. Could I call you back?抱歉!我现在正在开会。我再回电给你好吗?Please notify the staff to meet my office at 8:00 tomorrow morning.请通知全体职员明天早晨8点来我办公室开会。

①( On)the teacher's arriving,we started the meeting.②(When )the class teacher arrived,we started the meeting.③( Only)(when )the class teacher arrived,we started the meeting.④( Should)had the teacher arrived(that )we started the meeting.⑤( Not)(until )had the teacher arrived( that)we started the meeting.

(Now) (that) everyone is hese.let' s begin our meeting

全错全错，这应该是一个时间状语从句：We started the meeting when the teacher arrived.信不信由你，反正告诉你我也没好处。

Have a meeting

应该是填（Now）（ that） everyone is here, let's take the chair.不是拿椅子哦或者：Okay. Now we got everybody. Let's get started. 又或者：Okay,everybody is here. Let's get started/let's begin our meeting.还或者：Since no one is absent, let's start the meeting.不知道你是求翻译还是求填空呢？