短文填空
It was a fine day last Sunday． John went to a supermarket to do some____． Because it’s a little far away from his home, he______his car there．It was difficult for him to find a place to park his car．At last he found one at the corner between two buildings．After parking his car he went into the supermarket to_________the things he needed．Twenty minutes_________, he finished shopping and took the things slowly back to the car park．Suddenly he________two young men trying hard to open the door of his car．They were both _________ black clothes．John knew they were the car thieves． But he was_________and didn’t know what to do．He thought for a moment． Then he got an________．He went up to them and shouted loudly: “Can I help you? I think you lost your keys． You can use_________．” “Can your keys open this door? Why?” “Yes, because it’s my car．” When the two men heard this, they ran away as_________as they could． In this way, he stopped the thieves from stealing his car．How clever John was!