Question

The topic, _______ we devoted a heated discussion last night, is a hot issue at present.

A．which

B．where

C．to which

D．for which

Answer 1

C

试题分析：考查非限制性定语从句。句意：昨晚，我们热烈讨论的那个话题，现在是一个热门问题。根据逗号可知，是非限制性定语从句，devote...to sth把......投入到......。句中的devoted缺少介词to，故选C。