问题
选择题
The moment ________ Leo will never forget is________ Mr. Smith gave him a lot of valuable advice on how to improve his writing.
A．that; when
B．that; that
C．when; that
D．when; /
答案
答案：A
考查从句辨析。第一格是定语从句，先行词在定语从句中做宾语，故用关系代词that；第二格是表语从句，由于主语是the moment，所以应用when引导表语从句。