语法填空（共10小题，每小题1.5分，满分15分）,答案写在答题卡对应的空格中！！
One day, Mr. Robinson had to travel somewhere _______ business by air. He liked sitting by the window when he was flying, so when he got onto the plane, he looked for a window seat. He found all of them ______(take) except one. There was a soldier _______ (sit) in the seat beside this one. _____ Mr. Robinson’s surprise, the soldier didn’t take the one by the window; but, anyhow, he at once went towards it.
When he reached it, _______, he saw there was a notice on it. It was written in ink and said, “This seat is preserved(保留)for proper load balance(平衡), thank you.” Mr. Robinson had never seen such an ______(usual) notice in a plane before, but he thought that the plane must be carrying something particularly heavy in it, so he walked on ______(find) an empty seat.
______ the plane took off, two or three people tried to sit in the seat beside the soldier. But they also read the notice and went on. When the plane was nearly full, a very beautiful girl hurried into the plane. The soldier, ____ was watching the passengers coming in, ______(quick) took the notice off the seat beside him and in this way succeeded in having the company(陪伴) of the girl during the whole trip.