1. （2021年全国甲卷语法填空）
….It is possible ___43___ (walk) or bike the entire 14 kilometers.
We accessed the wall through the South Gate. The wall is 12 meters high and from here you can see streams of people moving inside and outside the City Wall.
After ___44___ (spend) some time looking at all the defensive equipment at the wall, we decided it was time for some action and what better than to ride on a piece of history!
…….
【答案】43. to walk 44. spending
【解析】
43．
考查动词不定式。句意：在观察了城墙上所有的防御设备后，我们决定是时候采取行动了，还有什么比骑在历史上更好的呢。分析句子可知，此处为句型“it +be+adj+to do sth.”，it为形式主语，动词walk的不定式短语作真正主语。故填to walk。
