根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    Allan was worried. This was his first time to go traveling by 1. He didn't know how to find his 2, so he went to the air hostess (空姐) and asked, “Could you 3 me? I can't find my seat. ” The air hostess showed him the seat and told him to 4down and fasten the seat belt (系好安全带). She told Allan not to move about when the plane was going up. And she also said that Allan's ears might feel a little 5, but he didn't need to 6 about it because many people felt like that. When the plane was flying very 7. Allan could stand up and walk around. He could either read 8, newspapers or see films. The air hostess would 9 food and drinks. Allan would enjoy the flight and 10 soon.