问题
选择题
See the flags on top of the building? That was ____ we did this morning.
[ ]
A. when
B. which
C. where
D. what
答案
答案：D
搜题请搜索小程序“爱下问搜题”
See the flags on top of the building? That was ____ we did this morning.
[ ]
A. when
B. which
C. where
D. what
答案：D