问题
选择题
—Do you still write to your friends these days?
—No, but I used ______ that when I was at school. [ ]
A. do
B. did
C. done
D. to do
答案
答案：D
搜题请搜索小程序“爱下问搜题”
—Do you still write to your friends these days?
—No, but I used ______ that when I was at school. [ ]
A. do
B. did
C. done
D. to do
答案：D
刚《晚清七十年》