I' ll never forget Mr. Smith, help we had made great progress.
A. with his
B. with whose
C. his
D. who
网友回答
A. with his
(答案→)B. with whose
C. his
D. who
解析:考查的是非限行定语从句,通过分析句子可知先行词是Mr. Smith故用表示人的关系代词,可排除A,C;从句中缺少的是状语,所以用介词with与关系词whose构成介宾短语修饰先行词Mr. Smith做从句的原因状语。句意是我们不会忘记Mr. Smith,在他的帮助下我们取得了很大的进步。故选B。