A．at that timeB． at this momentC．at lastD．at the beginn……

There was a robbery near Harrys home one night. Harry was looking out of his window ___16___. He saw a robber run out of a shop and he saw the robber ___17___ his mask(面具).He saw his face. Harry told his father what he had seen. When the police came, Harry and his ___18___ went to talk to them.“I saw the robber,” Harry told the police.“I can recognize(认出) him. He was about ___19___. He ___20___ a big red nose. His ears were big. He was quite tall and thin. There was ___21___ wrong with his right leg.” “___22___ do you know that”one of the policemen asked. “He limped(跛行),”Harry said. “What was he wearing”the other policeman asked. “He was wearing black trousers and a shirt,” Harry said. “His mask was a ladys stocking. His shoes were white sports shoes.” “You are a very clever boy,” the policeman said.”“___23___! Now we can send out a description of the robber.” The police did this and the next day they caught him. They put him in a line ___24___ some other men. They asked Harry to point him out. Harry did this ___25___. The police arrested(逮捕)the man at once. Then Harry went home with his father happily.

A．at that time
B． at this moment
C．at last
D．at the beginning