定语从句练习题(基础版)一、单项填空1. -Who is the man _ was talking to our English teacher?-Oh! Its Mr. Baker, our math teacher.A. he B. that C. whom D. which2. I hate the people _ dont help others when they are in trouble.A. who B. which C. they D. where3. The foreigner _ visited our school is from Canada.A. which B. when C. who D. whom4. George Mallory was an English school teacher _ loved climbing.A. who B. whom C. he D.