(2013·大纲卷)21.--I'm sorry I made a mistake! -- No body is perfect.
A new iPad in the market costs about ______ of a second-hand one.
By the time we arrived at the railway station, the train _________. As a result, we missed the train.
The small mountain village we spent our holiday last month lies in is now part of Hubei.
________ our surprise, when the audience saw this film, they all shouted ______ surprise.
Our school was going to send a teacher to Xinjiang . I was the first person _______ to go.