问题
选择题
— What ______ when the earthquake (地震) happened on May 12th?
— Er, I was having a geography class in the classroom. [ ]
A. are you doing
B. did you do
C. were you doing
答案
答案：C
搜题请搜索小程序“爱下问搜题”
— What ______ when the earthquake (地震) happened on May 12th?
— Er, I was having a geography class in the classroom. [ ]
A. are you doing
B. did you do
C. were you doing
答案：C