The train is about to start.这里用about干什么?

The train is about to start.这里用about干什么? The train was just about to start. the race is about to start The train is just going to strat.这里用just干什么 The train is about to leave in 10 minates. The train ( ) is about 30minutes from A to B. the train is just going to start.just在这里什么意思``去掉怎么样? when is the meeting supposed to start?It is __.A.about to be Now it is ( ) .The show is about to start.A.f 改正英语句子the medical team is about to start immediately.这个句子是错误 we start to quarrel about who is the best.是什么从句 Now it's----------.The show is about to start 说下为什么