问题
选择题
Can you tell me ________?[ ]
A．when did it happen
B．when it happened
C．when was it happened
D．when it was happened
答案
答案：B
搜题请搜索小程序“爱下问搜题”
Can you tell me ________?[ ]
A．when did it happen
B．when it happened
C．when was it happened
D．when it was happened
答案：B
