Our taxi had arrived by 9 o'clock yesterday morningLet's go. The guests have already arrived.They will have arrived by the time the meetings starts.
to be
I am tired of waiting. Where have you been?By the time I'm 30 I will have become (been?) a famous scientist.He didn't remember where he had been before the accident.
to paint
We will have painted the house by next Tuesday.She has painted more than ten pictures already.I wondered if they had painted the room.
to arrive
Our taxi had arrived by 9 o'clock yesterday morningLet's go. The guests have already arrived.They will have arrived by the time the meetings starts.to be
I am tired of waiting. Where have you been?By the time I'm 30 I will have become (been?) a famous scientist.He didn't remember where he had been before the accident.to paint
We will have painted the house by next Tuesday.She has painted more than ten pictures already.I wondered if they had painted the room.