20．听短文，回答问题
16．Why did the two men walk in the street one evening？
A．They wanted to steal something．
B．They would like to take a walk．
C．They couldn't fall asleep．
17．What was the time then？
A．Eleven at night． B．Twelve at night． C．Ten at night．
18．What did the most people do at that time？
A．Shopping． B．Working． C．Sleeping．
19．How did they feel when the dog bark at them？
A．Frightened． B．Excited． C．Sad．
20．What was the result？
A．The two young men were bitten（咬） by the dog．
B．The two young men stole something expensive．
C．The two young men stole nothing．
