甲、乙两地相距150千米，A、B两个人分别从甲、乙两地出发，两人相遇需要10个小时，已知甲的速度是乙的速度的2/3乙单独走完需要（）小时。

A．

B．15

C．20

D．17

用括号中词的适当形式填空

Linda loves her dog Davy. They went to New York City last Saturday. While Linda1(buy) a newspaper at the train station, the dog got out of his box and run away. The station was 2       (crowd) and Linda couldn’t see Davy3__         (everywhere).When Linda4       (shout) his name, some people looked at her but Davy didn’t come. Then she called the police. While she was talking on the phone, Davy5         (meet) another dog outside the station. She didn’t think about6      (look) outside the station.7    (final), a little boy said to her,” Did you look outside? I saw a black dog when I came in.” When Linda saw Davy, he was jumping and8__  (run) with another dog. There was a police9    （office）next to them. He said to her.” I think my dog 10______(find) your dog. ”