33.Before she______thethe door, she____what had happened to her computer.
The children,__________ had played the whole day long, were worn out.
He wrote a letter __________ he explained what had happened in the accident.
She brought in her three friends, none of __________ I had ever met before.
Ellen was a painter of birds and of nature,__________,for some reason, had withdrawn from all human society.
The prize will go to the writer __________ story shows the most imagination.