试题题干
Fill in the blanks with an item as required.
With a relative pronoun：
In the past，people had to take a ferryboat to Chongming Island，but now they can drive to it, 
is a great saving of time.
参考答案
试题解析
本题考查关系代词的用法。分析句子结构可知，该句是非限制性关系分句，空处的引导词指代前面的 but now they can drive to it，故应用 which。