问题补充：
He is the English teacher help we have made great progress.
A. under whose
B. with who
C. whose
D. with whose
答案：
A. under whose
B. with who
C. whose
D. with whose
解析：考查定语从句。本题先行词为the English teacher，whose指代先行词在句中作为help前面的定语，whose help一起作为with的宾语。句意：他就是那个英语老师，在他的帮助下，我们已经取得了很大的进步。故D正确。
