– What were you doing when I called you last night?– I ______ my homework and was going to bed.A. did B. had done C. was doing
The Spring Festival __________ in January or February.
— __________ will the meeting start? —In about ten minutes, I think.
I ________ my hometown for a long time. I really miss it!
As it reported, it is 100 years _____________ Tsinghua University was founded.
The more you smile, the ________ you will feel.