帮忙造过去完成时的英语句子

By nine o’clock last night,we had got 200 pictures from the spaceship.
I had been at the bus stop for 20 minutes when a bus finally came.
He said he had worked in that factory since 1949.
Mr.Smith died yesterday.He had been a good friend of mine.
I didn’t know a thing about the verbs,for I had not studied my lesson.
I returned the book that I had borrowed.
She found the key that she had lost.
He said that he had known her well.
I thought I had sent the letter a week before.
When I woke up,it had already stopped raining.
She didn’t go to bed until she had finished he work.
After he arrived in England,Marx worked hard to improve his English.
They had wanted to help but could not get there in time.
Hardly had he began to speak when the audience interrupted him.
It was the third time that he had been out of work that year.