---What are you looking for? -I’m looking for the book you lent me yesterdayA. that

问题补充：

---What are you looking for?

---I’m looking for the book you lent me yesterday.

A. that B. who C. whose

答案：

解析：定语从句。句意：你在找什么？我在找你昨天借给我的那本书。you lent me yesterday做定语修饰the book，故应该用that引导，故答案为A。