语法填空
阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空，并将答案填写在答题卡标号为16-25 的相应位置上。
In the 1950s, a family that owned a farm near Beulah, Michigan kept a bull chained to an elm(榆树)。The bull paced 1______ the tree, dragging the heavy iron chain, which led to a groove(槽) in the
bark(树皮). The groove 2_________(deep) over the years. Though for whatever reason, it did not kill the
tree.
3_______ some years, the family took their bull away. They cut the chain, leaving the loop around
the tree and one link 4_________(hang) down.
Then one year, agricultural catastrophe stuck Michigan in 5______ form of Dutch elm disease. All
the elms lining the road leading to the farm became infected 6______ died. Everyone thought that the old
elm would be the next. The farm owner considered 7_______(go) the safe thing: pulling it out and
chopping it up into firewood before it died.
8__________(amazing), the tree did not die. Nobody could understand 9_______ it was still the
only elm standing in the country. It is said that 10_____ doesn`t kill you will make you become stronger.
Or, as a plant pathologist(病理学家) put it, “ Life breaks us all, but afterwards, many of us are strongest
at the broken palces.”