1．To my great surprise, yesterday, he asked me a few questions ________ there were no answers.
A．to which B．about which
C．in which D．on which
答案与解析：A 句意：昨天，让我感到非常惊讶的是，他问了我一些根本没有答案的问题。“介词＋关系代词”引导定语从句，其中的介词在本题中由answer与to搭配而定，故引导词用to which。
2．Taobao.com is a free site, ________ visitors can not just purchase almost all kinds of products but open their own online shops.
A．whose B．which
C．what D．where
答案与解析：D 句意：淘宝网是一个免费的网站，浏览的人不仅可以在上面买到各种各样的商品，还可以在上面开自己的网店。所选项引导非限制性定语从句修饰free site，并在从句中作状语，故用where。whose在从句中作定语；which在从句中不作状语；what不能引导定语从句。
