第二节 语法填空 (共10小题，每小题1.5分，满分15分)
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31～40的相应位置上。
Child labor has been a problem for many years. Over a hundred years ago, Charles Dickens shocked many of his readers when he described the conditions ___31___ which young children worked in British factories. The conditions Dickens described continue, almost unchanged today, in many parts of the world.
