问题
选择题
I met a friend of mine _____ I was walking in the park. [ ]
A. because
B. after
C. when
D. if
答案
答案：C
搜题请搜索小程序“爱下问搜题”
I met a friend of mine _____ I was walking in the park. [ ]
A. because
B. after
C. when
D. if
答案：C