—Susan stays alone in the classroom and looks sad.—_____________to her?A What happens B What has happened C What is happening D What was happening
Jim is unhappy, do you know_____?
Mr. Green told us____ too much time____ reading novels.
My mother was cooking while I____ the radio.
Lucy does her homework very ________. She is ________ than Lily.
All of us found ________ hard to get along with him, he was too strict with others but not with himself.