21.阅读下列短文,掌握其大意。然后,从每小题的四个选项中选出可填入相应空白处的最佳选项。
Mr. Jones woke up early one morning, before the sun had risen. It was a beautiful morning, 21 he went to the window and looked out. He was 22 to see a neatly-dressed and mid-aged professor, who 23 in the university just up the road from Mr. Jones' house, coming the direction of the town. He had grey hair, thick glasses, and was 24 an umbrella, a morning newspaper and a bag. Mr. Jones thought that he must have 25 by the night train 26 taking a taxi.
Mr. Jones had a big tree in his garden, and the children had tied a long rope to one of the branches, so that they could swing on it.
Mr. Jones saw the professor 27 when he saw the rope and looked carefully up and down the road.When he saw that there was 28 in sight, he stepped into the garden ( there was no fence), put his umbrella, newspaper, bag and hat nearly on the grass and 29 the rope. He pulled it 30 to see whether it was strong enough to take his weight, then ran as fast as he could and swung into the 31 on the end of the rope, his grey hair blowing all around his face. 32 he swung, sometimes taking a few more 33 steps on the grass when the rope began to swing too slowly for him.
34 the professor stopped, straightened his tie, combed his hair carefully, put on his hat, 35 his umbrella, newspaper, bag, and continued on his way to the university, looking as quiet and correct and respectable as one would expect a professor to be.
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