– 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
Last year he had an opportunity _______ in Oxford University, but he gave it up.
Our Chinese teacher, Miss Liu, is pretty strict _______us.
I have a friend _______ would like to speak to you.
There is _______ on Channel 3. Try others.
They just talk instead of _______.