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 walk 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 that the dog could understand English."
Why did the two men walk in the street one evening?

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.

From the sentence "one said in English to the other in a low voice", we know that ____.

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