when I got there,I found a number of people (to be)already working there.这里括号里的to be 是否可有可无?

when I got there,I found the farm tools_____.(repair) when I got there,I found him_____(repair)farm tools. when I got there,the meeting _____for ten minutes 七下It was late when I got to there It was e( )8 o'clocs when I got there i got a scoop i was right there when it happened 语言点 When I got there,I found Philip( )(work)hard.为什么要填working When i got there,I saw some boys __on the playground.这里为什么填playing呢? I called back when I got his message,but there was no______Aanswer Bnoise Cvoice Dsound when he got there ,the train had alreadly left...能改为by the time i got there. He left when I got there.和 He left when I had got there这2句话的意思有什么区别? They were working when I got there.（对画线部分提问）对were working提问___________ ___________ they __________ when I got there? she was still having breakfast when I got there.怎么翻译 The girl ____ (打扮)for the party when i got there. She ____ _____ _____ _____ _____ _____(往车站外面看）when I got there She ___ ___ ____ ____ ____ _____(往车站外看) when I got there. the train had left when i got there 的一般疑问句是什么 when i got there,the train had just _____.填arrived还是reached?