One evening two young men were walking in the street together. They tried to find a chance to steal something. The clock struck twelve. Most of the people went to bed. Quickly they came to a house and it seemed that everyone in the house had fallen asleep. Standing at the front gate, one said in English to the other in a low voice, "You wait here. I'll go around to the back door and then get into the house. "Suddenly out of the house ran a dog, barking at them. The two men were very frightened and ran away as fast as they could. Finally, they stopped at a lonely place. The man said breathlessly, "It's too bad. I hadn't expected(期望)that the dog could understand English. "
Why did the two men walk in the street one evening? Because.       .

A．they couldn’t fall asleep

B．they wanted to steal something

C．they would like to take a walk

D．they went to visit their friends

"One said in English to the other in a low voice. "From the above sentence we know        .

A．he didn't know English

B．he liked speaking English quietly

C．he couldn't speak aloud

D．he was afraid of waking up others

The dog ran out of the house and barked at them only because.        .

A．it understood English	B．it knew them
C．it found someone outside	D．Both B and C

At last the two young men        .

A．stole nothing	B．stole something expensive
C．were bitten by the dog	D．were caught by the police

What did the owners do while the dog was barking?

A．They stopped it.	B．They got up quickly.
C．They shouted for help.	D．The story didn't tell us.