Question

—What ______ when the earthquake happened on May 12^th ?
—Er, I was having a geography class in the classroom.
A. are you doing        B. did you do   C. were you doing  D will you do

Answer 1

C

解析試題分析：考查時態(tài)。過去進行時表示在過去的某個時間點或者時間段正在發(fā)生的事情。句意：當(dāng)5.12地震發(fā)生的時候，你在做什么？—嗯，我在真正教室里上地理課。故C正確。
考點：考查時態(tài)
點評：過去進行時表示在過去的某個時間點或者時間段正在發(fā)生的事情。