He lived in London for 3 months, during ______ time he learned some English.
A. this B. which
C. that D. same
He lived in London for 3 months, during ______ time he learned some English.
A. this B. which
C. that D. same
D
先行词是3 months，this，that，same均不能用于介词前提的定语从句。