1. (2017·济南模拟) 阅读短文，从方框中选出适当的动词,并用其适当形式填空。有的需要加助动词或不定式符号（每词限用一次）。

retire   go    work   catch   stop

    Mr. Smith  in a police station for 42 years and he will retire this autumn. He tried to work hard in his life but he wasn't lucky enough even a thief.

    Last weekend, Mr. Smith  to buy some sugar in a shop. When he got into the shop, he suddenly saw a young man get some money from a woman's bag and walk away. He ran to the thief and at the end of a blind alley(死胡同), the young thief by Mr. Smith.

    “Please give me a chance, sir,” said the thief. “I'll never do that again!”

    “But who can give me a chance?” said Mr. Smith. “I next month and this is the first time I've caught a thief!”