问题
选择题
—Do you like your maths teacher?
—Sure, because he is the teacher ___ helps me a lot.
A．whose
B．whom
C．which
D．who
答案
D
题目分析：考查定语从句：句意：--你喜欢你的数学老师吗？--当然了，因为他是给我很多帮助的老师。先行词是the teacher，定语从句缺少主语，用who引导定语从句，选D。