材料
Allan was worried. This was his first time to go traveling (1)He didn't know how to find his seat,(2)he went to the air hostess and asked,“Couldyouhelp me?I can't find my seat.”The air hostess showed (3)the seat and told him.
(4)and fasten the seat belt. She told Allan not to move about when the plane wasgoing up. And she also said that Allan's ears might feel (5)strange,but he didn't t need to (6)it because many people felt(7)that. Whenthe plane was flyingvery high,Allan could stand up and walk around. Hecould (8)read books,newspapersor see films. The air hostess would(9)foodand drinks. Allan wouldenjoy the flight and (10)soon.
第(6)选()
A. worrying
B. be worried
C. worry about
D. worry
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